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1/41 www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. cmos ldo regulators fo r portable equipments 1ch 200ma cmos ldo regulators bu td2wnvx series description bu ?? td2wnvx series is high-performance full cmos regul ator with 200-ma output, which is mounted on micro miniature package sson004x1010 (1.0 mm ? 1.0 mm ? 0.6 mm). it has excellent noi se characteristics and load responsiveness characteristics despite its low circuit current consumption of 35a. it is most appropriate for various applications such as power supplies for logic ic, rf, and ca mera modules. micro miniature sson004x1010 with built-in heatsink is adopted for the package, which contri butes to the space-saving design of the set. features 1) high-accuracy output voltage of ? 1% ( ? 25 mv on vout<2.5v products) 2) high ripple rejection: 70 db (typ., 1 khz,) 3) compatible with small ceramic capacitor (cin=co=0.47 f) 4) low current consumption: 35 a 5) on/off control of output voltage 6) with built-in overcurrent protection circuit and thermal shutdown circuit 7) with built-in output discharge circuit 8) adopting ultra-small package sson004x1010 applications battery-powered portable equipment, etc. line up 200 ma bu td2wnvx series product name 1.0 1.2 1.5 1.8 1.85 1.9 2.0 2.1 2.3 2.5 package bu td2wnvx sson004x1010 2.6 2.7 2.8 2.85 2. 9 3.0 3.1 3.2 3.3 3.4 model name bu td2wnvx a symbol contents specification of output voltage a output voltage (v) output voltage (v) output voltage (v) output voltage (v) 10 1.0 v(typ.) 19 1.9 v(typ.) 26 2.6 v(typ.) 30 3.0 v(typ.) 12 1.2 v(typ.) 20 2.0 v(typ.) 27 2.7 v(typ.) 31 3.1 v(typ.) 15 1.5 v(typ.) 21 2.1 v(typ.) 28 2.8 v(typ.) 32 3.2 v(typ.) 18 1.8 v(typ.) 23 2.3v(typ.) 2j 2.85 v(typ.) 33 3.3 v(typ.) 1j 1.85 v(typ.) 25 2.5 v(typ.) 29 2.9 v(typ.) 34 3.4 v(typ.) no.11020ebt07
technical note 2/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. absolute maximum ratings parameter symbol ratings unit maximum applied power voltage vmax -0.3 ~ +6.5 v power dissipation pd 560 (*1) mw maximum junction temperature tjmax +125 operational temperature range topr -40 ~ +85 storage temperature range tstg -55 ~ +125 (*1) when pcb (70 mm ? 70 mm, thickness 1.6-mm glass epoxy) a standard rohm board is implemented. reduced to 5.6 mw/ when used at ta=25 or higher. recommended operating range (do not exceed pd.) parameter symbol ratings unit input power supply voltage vin 1.7 ~ 5.5 v maximum output current imax 200 ma recommended operating conditions parameter symbol ratings unit conditions min. typ. max. input capacitor c in 0.22 (*2) 0.47 f a ceramic capacitor is recommended. output capacitor c o 0.22 (*2) 0.47 f a ceramic capacitor is recommended. (*2) set the capacity value of the capaci tor so that it does not fall below the minimum value, taking temperature characterist ics, dc device characteristics, and change with time into consideration.
technical note 3/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. electrical characteristics(ta=25 , vin=vout+1.0v (*3) , stby=vin, c in =0.47 f, c o =0.47 f, unless otherwise noted.) parameter symbol limits unit conditions min. typ. max. overall device output voltage vout vout 0.99 vout vout 1.01 v iout=10a,vout R2.5v vout -25mv vout +25mv iout=10a,vout 2.5v operating current iin - 35 60 a iout=0ma operating current (stby) istby - - 1.0 a stby=0v ripple rejection ratio rr 45 70 - db vrr= -20dbv,frr=1khz,iout=10ma dropout voltage vsat - 280 540 mv 2.5v Qvout Q 2.6v (vin=0.98*vout,iout=200ma) - 260 500 mv 2.7v Qvout Q 2.85v (vin=0.98*vout,iout=200ma) - 240 460 mv 2.9v Qvout Q 3.1v (vin=0.98*vout,iout=200ma) - 220 420 mv 3.2v Qvout Q 3.4v (vin=0.98*vout,iout=200ma) line regulation vdl - 2 20 mv vin=vout+1.0v to 5.5v (*4) iout=10a load regulation vdlo - 10 80 mv iout=0.01ma to 100ma over-current protection (ocp) limit current ilmax 220 400 700 ma vo=vout*0.95 short current ishort 20 70 150 ma vo=0v standby block discharge resistor rdsc 20 50 80 ? vin=4.0v, stby=0v, vout=4.0v stby pin pull-down current istb 0.1 0.6 2.0 a stby=1.5v stby control voltage on vstbh 1.2 - 5.5 v off vstbl -0.3 - 0.3 v * this product does not have radiation-proof design. (*3) vin=2.5v for vout Q 1.5v (*4) vin=2.5v to 5.5v for vout Q 1.5v electrical characteristics of each output voltage (ta=25 , stby=vin, c in =0.47 f, co=0.47 f, unless otherwise noted.) parameter symbol limits unit conditions min. typ. max. 1.2v maximum output current 80 160 - ma vin=1.7v 200 - - vin=2.1v 1.5v 60 120 - vin=1.8v 200 - - vin=2.2v 1.8v 200 - - vin=2.4v 1.9v 200 - - vin=2.5v
technical note 4/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.4 stability area characteristics (example) 0.01 0.1 1 10 100 0 50 100 150 200 iout [ma] esr [ ? ] esr[] block diagram, recommended circuit diagram, and pin configuration diagram bu td2wnvx input / output terminal equivalent circuit schematic 1pin (vout) 2pin (gnd) 3pin (stby) 4pin (vin) fig.2 input/output equivalent circuit about input/outp ut capacitor it is recommended to place a capacitor as close as possible to the pins between the input terminal and gnd or between the output terminal and gnd. the capacitor between the input terminal and gnd becomes valid when source impedance increases or when wiring is long. the larger the capacity of t he output capacitor between the output terminal and gnd is, the better the stability and characteristics in output load fluctuation become. however, please check the status of actual implementation. ceramic capacitors generally have variation, temperature characteristics, and direct current bias characteristics and the capacity value also decreases with time depending on the usage conditions. it is recommended to select a ceramic capacitor upon inquiring about detailed data of the related manufacturer. about the equivalent series resistance (esr) of a ceramic capacitor capacitors generally have esr (equivalent series resistance) and it operates stably in the esr-iout area shown on the right. since ceramic capacitors, tantalum capacitors, electrolytic capacitors, etc. generally have different esr, please check the esr of the capacitor to be used and use it within the stability area range shown in the right grap h for evaluation of the actual application. pin no. symbol function 1 vout voltage output 2 gnd grounding 3 stby on/off control of output voltage (high: on, low: off) 4 vin power input fig.3 capacity ? bias characteristics 4 3 1 2 cin vin gnd stby vstby vout vout co vref ocp stby discharge tsd vin fig.1 recommended circuit diagram recommended ceramic capacitor for cin & co murata manufacturing co., ltd. grm188b11a474ka61d capacity value of ceramic capacitor - dc bias characteristics ( example ) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 00.511.522.533.54 dc bias voltage [v] capacitance change [%] 10-v withstand voltag e b1char acter istics grm 188b11a105ka61d 10-v withstand voltag e b char acter istics 6.3- v withstand voltag e b char acter istics 4-v withstand voltag e x6s characteristics 10-v withstand voltag e f char acter istics 10- v withstand voltag e f char acter istics stable region unstable region cout=0.47 f ,c in =0.47 f ,temp=+25
technical note 5/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.13. vout - temp 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin = 2.5v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin=2.5v stby=0v reference data bu12td2wnvx (ta=25 unless otherwise specified.) fig.5. output voltage fig.6. line regulation fig.7. circuit current ignd fig.8. vstby - istby fig.9. iout - ignd fig.10. load regulation fig.11. ocp threshold fig.12. stby threshold fig.14. ignd vs temp fig.15. ignd - temp (stby) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85 temp=25c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=2.5v stby=1.5v 0.0 0.5 1.0 1.5 00 . 5 11 . 5 stby voltage (v) output voltage (v) vin=2.5v io=0ma temp=-40c temp=25c temp=85c 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 - 40 - 15 10 35 60 85 temp (c) output voltage (v) vin=2.5v stby=1.5v io=0.1ma 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin= 2.5v stby=1.5v temp=25c temp=85c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v temp=25c vin=2.5v vin=1.7v stby=1.5v
technical note 6/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.16. load response 1.20 1.15 1.10 1.25 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.18. load response 1.20 1.15 1.10 1.25 output voltage (v) output current (ma) 50 100 0 iout=0ma 100ma fig.20. load response 1.20 1.10 1.00 1.30 output voltage (v) output current (ma) 100 200 0 iout=0ma 200ma fig.21. load response output current (ma) 100 200 0 1.30 1.20 1.10 1.40 output voltage (v) iout=200ma 0ma fig.22. load response 1.20 1.15 1.10 1.25 output voltage (v) output current (ma) 50 100 0 iout=50ma 100ma reference data bu12td2wnvx (ta=25 unless otherwise specified.) fig.19. load response 1.25 1.20 1.15 1.30 output voltage (v) output current (ma) 50 100 0 iout=100ma 0ma fig.17. load response iout=50ma 0ma 1.25 1.20 1.15 1.30 output voltage (v) out p ut current ( ma ) 50 100 0 fig.23. load response 1.20 1.15 1.10 1.25 out p ut volta g e ( v ) out p ut current ( ma ) 50 100 0 iout=100ma 50ma
technical note 7/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu12td2wnvx (ta=25 unless otherwise specified.) fig.27. start up time (vin=stby) iout=200ma fig.24. start up time iout=0ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.25. start up time iout=200ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.26. start up time (vin=stby) iout=0ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.5v 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.5v fig.28. discharge time stby voltage (v) 1.0 2.0 0.0 1.0 0.0 2.0 output voltage (v) stby=1.5 0v fig.29. vin response 1.20 1.19 1.18 1.21 output voltage (v) input voltage (v) 3.5 4.5 2.5 vin=2.5v 3.5v 2.5v
technical note 8/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.30. output voltage fig.31. line regulation fig.32. circuit current ignd fig.33. vstby - istby fig.34. iout - ignd fig.35. load regulation fig.36. ocp threshold fig.37. stby threshold fig.38. vout - temp fig.39. ignd vs temp fig.40. ignd vs temp (stby) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 1.41.5 1.61.71.81.9 2 2.1 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85c temp=25c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=2.5v stby=1.5v 0.0 0.5 1.0 1.5 2.0 00.5 11.5 stby voltage (v) output voltage (v) vin=3.8v io=0ma temp=-40c temp=25c temp=85c 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=2.5v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=2.5v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin=2.5v stby=0v 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin=2.5v stby=1.5v temp=25c temp=85c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 0.10.20.30.40.50.6 output current (a) output voltage (v) vin=5.5v temp=25c stby=1.5v vin=2.5v vin=2.0v reference data bu15td2wnvx (ta=25 unless otherwise specified.)
technical note 9/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.47. load response 1.50 1.45 1.40 1.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.46. load response iout=200ma 0ma output current (ma) 100 200 0 1.60 1.50 1.40 1.70 out p ut volta g e ( v ) fig.48. load response 1.55 1.50 1.45 1.60 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 50ma reference data bu15td2wnvx (ta=25 unless otherwise specified.) fig.43. load response 1.50 1.45 1.40 1.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.42. load response iout=50ma 0ma 1.25 1.20 1.15 1.30 output voltage (v) output current (ma) 50 100 0 1.55 1.50 1.45 1.60 out p ut volta g e ( v ) output current (ma) 50 100 0 fig.41. load response 1.50 1.45 1.40 1.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.44. load response iout=100ma 0ma output current (ma) 50 100 0 1.55 1.50 1.45 1.60 out p ut volta g e ( v ) fig.45. load response 1.50 1.40 1.30 1.60 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma
technical note 10/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.50. start up time iout=200ma stby voltage (v) 1.0 2.0 0.0 1.0 0.0 2.0 output voltage (v) stby=0 1.5v fig.51. start up time (vin=stby) iout=0ma reference data bu15td2wnvx (ta=25 unless otherwise specified.) fig.49. start up time iout=0ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.5v fig.52. start up time (vin=stby) iout=200ma stby voltage (v) 2.0 4.0 0.0 1.0 0.0 2.0 output voltage (v) vin=stby=0 2.5v fig.54. vin response 1.50 1.49 1.48 1.51 output voltage (v) input voltage (v) 3.5 4.5 2.5 vin=2.5v 3.5v 2.5v fig.53. discharge time 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v
technical note 11/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua temp=85c temp=25c vin=stby temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=2.8v stby=1.5v 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin=2.8v stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=3.8v io=0ma temp=-40c temp=25c temp=85c 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=2.8v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=2.8v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=2.8v stby=0v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.00.10.20.30.40.50.6 output current (ma) output voltage (v) vin=2.3v vin=2.8v vin=5.5v temp=25c stby=1.5v reference data bu18td2wnvx (ta=25 unless otherwise specified.) fig.55. output voltage fig.56. line regulation fig.57. circuit current ignd fig.58. vstby - istby fig.59. iout - ignd fig.60. load regulation fig.61. ocp threshold fig.62. stby threshold fig.63. vout - temp fig.64. ignd - temp fig.65. ignd - temp (stby)
technical note 12/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.67. load response 1.85 1.80 1.75 1.90 out p ut volta g e ( v ) iout=50ma 0ma vin=2.8v stby=1.5v cout=0.47uf fig.68. load response 1.80 1.75 1.70 1.85 out p ut volta g e ( v ) iout=0ma 100ma fig.69. load response iout=100ma 0ma vin=2.8v stby=1.5v cout=0.47uf 1.85 1.80 1.75 1.90 out p ut volta g e ( v ) reference data bu18td2wnvx (ta=25 unless otherwise specified.) fig.72. load response 1.80 1.70 1.60 1.90 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.66. load response 1.80 1.75 1.70 1.85 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma output current (ma) 50 100 0 fig.73. load response iout=100ma 50ma vin=2.8v stby=1.5v cout=0.47uf 1.80 1.75 1.70 1.85 out p ut volta g e ( v ) fig.70. load response 1.80 1.70 1.60 1.90 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.71. load response iout=200ma 0ma vin=2.8v stby=1.5v cout=0.47uf output current (ma) 100 200 0 1.90 1.80 1.70 2.00 out p ut volta g e ( v ) output current (ma) 50 100 0 output current (ma) 50 100 0 output current (ma) 50 100 0
technical note 13/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.75. start up time iout=200ma fig.74. start up time iout=0ma reference data bu18td2wnvx (ta=25 unless otherwise specified.) fig.76. start up time (vin=stby) iout=0ma iout=0ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.8v fig.77. start up time (vin=stby) iout=200ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=2.8 0v fig.78. discharge time 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.79. vin response 1.80 1.79 1.78 1.81 output voltage (v) input voltage (v) 3.8 4.8 2.8 vin=2.8v 3.8v 2.8v stby voltage (v) 1.0 2.0 0.0 1.0 0.0 2.0 output voltage (v) stby=0 1.5v 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v
technical note 14/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.80. output voltage fig.81. line regulation fig.82. circuit current ignd fig.83. vstby - istby fig.84. iout - ignd fig.85. load regulation fig.86. ocp threshold fig.87. stby threshold fig.88. vout - temp fig.89. ignd - temp fig.90. ignd - temp (stby) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma 1.85 1.86 1.87 1.88 1.89 1.90 1.91 1.92 1.93 1.94 1.95 1.81.9 2 2.12.22.32.42.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) gnd current (ua) io=0ua temp=85c temp=25c temp=-40c vin=stby 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=3.9v stby=1.5v 1.85 1.86 1.87 1.88 1.89 1.90 1.91 1.92 1.93 1.94 1.95 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 2.9v stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=3.9v io=0ma temp=-40c temp=25c temp=85c 1.85 1.86 1.87 1.88 1.89 1.90 1.91 1.92 1.93 1.94 1.95 -40 -15 10 35 60 85 temp ( c) output voltage (v) vin=2.9v stby=1.5v io=100a 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin= 2.9v stby=1.5v io=0a 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=2.9v stby=0v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v ) vin=5.5v vin=2.4v vin=2.9v temp=25c stby=1.5v reference data bu19td2wnvx (ta=25 unless otherwise specified.)
technical note 15/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu19td2wnvx (ta=25 unless otherwise specified.) fig.98. load response 1.95 1.90 1.85 2.00 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 50ma fig.92. load response 1.95 1.90 1.85 2.00 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 0ma fig.94. load response 1.95 1.90 1.85 2.00 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.96. load response 2.00 1.90 1.80 2.10 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.93. load response 1.90 1.85 1.80 1.95 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.95. load response 1.90 1.80 1.70 2.00 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.97. load response 1.90 1.85 1.80 1.95 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.91. load response 1.90 1.85 1.80 1.95 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma
technical note 16/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu19td2wnvx (ta=25 unless otherwise specified.) fig.100. start up time iout=200ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.101. start up time (vin=stby) iout=0ma 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.9v fig.103. discharge time 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.104. vin response 1.90 1.89 1.88 1.91 out p ut volta g e ( v ) input voltage (v) 3.9 4.9 2.9 vin=2.9v 3.9v 2.9v fig.99. start up time iout=0ma stby=0 1.5v 1.0 0.0 2.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 1.0 0.0 2.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 2.9v fig.102. start up time (vin=stby) iout=200ma
technical note 17/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.114. vout - temp 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua temp=85c temp=25c temp=-40c vin=stby 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=3.5v stby=1.5v 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin=3.5v stby=1.5v temp=-40c temp=25c temp=85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=3.5v io=0ma temp=-40c temp=25c temp=85c 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 2.53 2.54 2.55 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=3.5v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin = 3.5v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=3.5v stby=0v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v vin=3.0v vin=3.5v stby=1.5v temp=25c reference data bu25td2wnvx (ta=25 unless otherwise specified.) fig.105. output voltage fig.106. line regulation fig.107. circuit current ignd fig.108. vstby - istby fig.109. iout - ignd fig.110. load regulation fig.111. dropout voltage fig.112. ocp threshold fig.113. stby threshold fig.115. ignd - temp fig.116. ignd - temp (stby)
technical note 18/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.117. load response 2.50 2.45 2.40 2.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.118. load response output current (ma) 50 100 0 2.65 2.50 2.45 2.70 out p ut volta g e ( v ) iout=50ma 0ma fig.119. load response 2.50 2.45 2.40 2.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.120. load response 2.55 2.50 2.45 2.60 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=100ma 0ma fig.121. load response 2.50 2.40 2.30 2.60 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.122. load response output current (ma) 100 200 0 2.60 2.50 2.40 2.70 out p ut volta g e ( v ) iout=200ma 0ma reference data bu25td2wnvx (ta=25 unless otherwise specified.) fig.124. load response 2.55 2.50 2.45 2.0 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0 fig.123. load response 2.50 2.45 2.40 2.55 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma
technical note 19/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.127. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.5v fig.128. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.5v fig.125. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.126. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.130. vin response vin=3.5v 4.5v 3.5v 2.50 2.49 2.48 2.51 out p ut volta g e ( v ) input voltage (v) 4.5 5.5 3.5 fig.129. discharge time 2.0 0.0 4.0 output voltage (v) stby=1.5 0v stby voltage (v) 1.0 2.0 0 reference data bu25td2wnvx (ta=25 unless otherwise specified.)
technical note 20/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.140. vout - temp 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 2.55 2.56 2.57 2.58 2.59 2.60 2.61 2.62 2.63 2.64 2.65 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85c temp=25c temp=-40c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=3.6v stby=1.5v 2.55 2.56 2.57 2.58 2.59 2.60 2.61 2.62 2.63 2.64 2.65 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 3.6v stby=1.5v temp=-40c temp=25c temp=85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v vin=3.1v vin=3.6v temp=25c stby=1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=3.6v io=0ma temp=-40c temp=25c temp=85c 2.55 2.56 2.57 2.58 2.59 2.60 2.61 2.62 2.63 2.64 2.65 -40 -15 10 35 60 85 temp (c) output voltage (v) vin = 3.6v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin = 3.6v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=3.6v stby=0v reference data bu26td2wnvx (ta=25 unless otherwise specified.) fig.131. output voltage fig.132. line regulation fig.133. circuit current ignd fig.134. vstby - istby fig.135. iout - ignd fig.136. load regulation fig.137. dropout voltage fig.138. ocp threshold fig.139. stby threshold fig.141. ignd - temp fig.142. ignd - temp (stby)
technical note 21/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.143. load response 2.60 2.55 2.50 2.65 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.145. load response 2.60 2.55 2.50 2.65 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.147. load response 2.60 2.50 2.40 2.70 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.149. load response 2.60 2.55 2.50 2.65 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma reference data bu26td2wnvx (ta=25 unless otherwise specified.) fig.144. load response 2.65 2.60 2.55 2.70 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 0ma fig.146. load response 2.65 2.60 2.55 2.70 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.148. load response 2.70 2.60 2.50 2.80 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.150. load response 2.61 2.60 2.59 2.62 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 50ma
technical note 22/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu26td2wnvx (ta=25 unless otherwise specified.) fig.151. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.153. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.6v fig.154. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.6v fig.155. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.156. vin response 2.65 2.60 2.55 out p ut volta g e ( v ) input voltage (v) 4.6 5.6 3.6 vin=3.6v 4.6v 3.6v fig.152. start up time iout=200ma stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v 2.0 0.0 4.0 output voltage (v)
technical note 23/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 2.65 2.66 2.67 2.68 2.69 2.70 2.71 2.72 2.73 2.74 2.75 2.62.72.82.9 3 3.13.23.3 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=3.7v stby=1.5v 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=3.7v io=0ma temp=-40c temp=25c temp=85c 2.65 2.66 2.67 2.68 2.69 2.70 2.71 2.72 2.73 2.74 2.75 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=3.7v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin = 3.7v stby=1.5v io=0.1ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=3.7v stby=0v 2.65 2.66 2.67 2.68 2.69 2.70 2.71 2.72 2.73 2.74 2.75 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 3.7v stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v vin=3.1v vin=3.6v temp=25c stby=1.5v reference data bu27td2wnvx (ta=25 unless otherwise specified.) fig.157. output voltage fig.158. line regulation fig.159. circuit current ignd fig.160. vstby - istby fig.161. iout - ignd fig.162. load regulation fig.163. dropout voltage fig.164. ocp threshold fig.165. stby threshold fig.166. vout - temp fig.167. ignd - temp fig.168. ignd - temp (stby)
technical note 24/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.169. load response 2.70 2.65 2.60 2.75 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.170. load response 2.75 2.70 2.65 2.80 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 0ma fig.171. load response 2.70 2.65 2.60 2.75 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.172. load response 2.75 2.70 2.65 2.80 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.173. load response 2.70 2.60 2.50 2.80 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.174. load response 2.80 2.70 2.60 2.90 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.175. load response 2.70 2.65 2.60 2.75 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.176. load response 2.75 2.70 2.65 2.80 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0 reference data bu27td2wnvx (ta=25 unless otherwise specified.)
technical note 25/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu27td2wnvx (ta=25 unless otherwise specified.) fig.177. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.178. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.179. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.7v fig.180. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.7v fig.181. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.182. vin response 2.70 2.69 2.68 2.71 out p ut volta g e ( v ) input voltage (v) 4.7 5.7 3.7
technical note 26/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.192. vout - temp 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin= 3.8v stby=0v 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=3.8v stby= 1.5v io=0ma 2.75 2.76 2.77 2.78 2.79 2.80 2.81 2.82 2.83 2.84 2.85 -40 -15 10 35 60 85 temp ( c) output voltage (v) vin=3.8v stby=1.5v io=0.1ma 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.5 11.5 stby voltage (v) output voltage (v) vin=3.8v io=0ma temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 2.75 2.76 2.77 2.78 2.79 2.80 2.81 2.82 2.83 2.84 2.85 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 input voltage (v) output voltage (v) temp=25c vin=stby io=0ua io= 100ua io=50ma io=200ma 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85c temp=25c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=3.8v stby=1.5v 2.75 2.76 2.77 2.78 2.79 2.80 2.81 2.82 2.83 2.84 2.85 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 3.8v stby=1.5v temp=-40c temp=25c temp=85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v ) vin=5.5v vin=3.3v vin=3.8v temp=25c stby=1.5v reference data bu28td2wnvx (ta=25 unless otherwise specified.) fig.183. output voltage fig.184. line r egulation fig.185. circuit current ignd fig.186. vstby - istby fig.187. iout - ignd fig.188. load regulation fig.189. dropout voltage fig.190. ocp threshold fig.191. stby threshold fig.193. ignd - temp fig.194. ignd - temp (stby)
technical note 27/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.201. load response 2.80 2.75 2.70 2.85 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma reference data bu28td2wnvx (ta=25 unless otherwise specified.) fig.202. load response 2.85 2.80 2.75 2.90 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0 fig.196. load response 2.85 2.80 2.75 2.90 out p ut volta g e ( v ) output current (ma) 50 100 0 fig.198. load response 2.85 2.80 2.75 2.90 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.200. load response 2.90 2.80 2.70 3.00 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.195. load response 2.80 2.75 2.70 2.85 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.197. load response 2.80 2.75 2.70 2.85 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.199. load response 2.80 2.70 2.60 2.90 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma
technical note 28/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.203. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.204. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.205. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.8v fig.206. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 3.8v fig.207. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.208. vin response 2.80 2.79 2.78 2.81 out p ut volta g e ( v ) input voltage (v) 4.8 5.8 3.8 vin=3.8 4.8v 3.8v reference data bu28td2wnvx (ta=25 unless otherwise specified.)
technical note 29/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.212. vstby - istby fig.213. iout - ignd fig.214. load regulation fig.215. dropout voltage fig.216. ocp threshold fig.217. stby threshold fig.218. vout - temp fig.219. ignd - temp fig.220. ignd - temp (stby) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 2.95 2.96 2.97 2.98 2.99 3.00 3.01 3.02 3.03 3.04 3.05 2.9 3 3.13.2 3.33.4 3.53.6 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io= 200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85c temp=25c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=4.0v stby=1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.5 11.5 stby voltage (v) output voltage (v) vin=4.0v io=0ma temp=-40c temp=25c temp=85c 2.95 2.96 2.97 2.98 2.99 3.00 3.01 3.02 3.03 3.04 3.05 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=4.0v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=4.0v stby=1.5v io=0ma 2.95 2.96 2.97 2.98 2.99 3.00 3.01 3.02 3.03 3.04 3.05 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin=4.0v stby=1.5v temp=25c temp=-40c temp=85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=25c temp=-40c temp=85c 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin = 4.0v stby=0v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.10.20.30.40.50.6 output current (a) output voltage (v) vin=5.5v vin=3.5v vin=4.0v temp=25c stby=1.5v reference data bu30td2wnvx (ta=25 unless otherwise specified.) fig.209. output voltage fig.210. line regulation fig.211. circuit current ignd
technical note 30/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.221. load response 3.00 2.95 2.90 3.05 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.222. load response 3.05 3.00 2.95 3.10 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 0ma fig.223. load response 3.00 2.95 2.90 3.05 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.224. load response 3.05 3.00 2.95 3.10 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.225. load response 3.00 2.90 2.80 3.10 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.226. load response 3.10 3.00 2.90 3.20 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.227. load response 3.00 2.95 2.90 3.05 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.228. load response 3.05 3.00 2.95 3.10 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0 reference data bu30td2wnvx (ta=25 unless otherwise specified.)
technical note 31/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.229. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.230. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.231. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.0v fig.232. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.0v fig.233. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 stby=1.5 0v reference data bu30td2wnvx (ta=25 unless otherwise specified.) fig.234. vin response 3.00 2.99 2.98 3.01 out p ut volta g e ( v ) input voltage (v) 5.0 6.0 4.0 vin=4.0 5.0v 4.0v
technical note 32/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.244. vout - temp 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85 temp=25 temp=-40c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=4.1v stby=1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v vin=3.6v vin=4.1v temp=25c stby=1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1 1.5 stby voltage (v) output voltage (v) vin=4.1v io=0ma temp=-40c temp=25c temp=85c 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=4.1v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin=4.1v stby=1.5v io=0ma 3.05 3.07 3.09 3.11 3.13 3.15 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 4.1v stby=1.5v temp=-40c temp=25c temp=85c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=4.1v stby=0v reference data bu31td2wnvx (ta=25 unless otherwise specified.) fig.235. output voltage fig.236. line regulation fig.237. circuit current ignd fig.238. vstby - istby fig.239. iout - ignd fig.240. load regulation fig.241. dropout voltage fig.242. ocp threshold fig.243. stby threshold fig.245. ignd - temp fig.246. ignd - temp (stby)
technical note 33/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.247. load response 3.10 3.05 3.00 3.15 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.249. load response 3.10 3.05 3.00 3.15 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.250. load response 3.15 3.10 3.05 3.20 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.253. load response 3.10 3.05 3.00 3.15 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma reference data bu31td2wnvx (ta=25 unless otherwise specified.) fig.248. load response 3.15 3.10 3.05 3.20 out p ut volta g e ( v ) iout=50ma 0ma output current (ma) 50 100 0 fig.252. load response 3.20 3.10 3.00 3.30 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.251. load response 3.10 3.00 2.90 3.20 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma fig.254. load response 3.15 3.10 3.05 3.20 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0
technical note 34/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.255. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.256. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.257. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.1v fig.258. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.1v fig.259. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.260. vin response 3.10 3.09 3.08 3.11 out p ut volta g e ( v ) input voltage (v) 5.1 6.1 4.1 vin=4.1v 5.1v 4.1v reference data bu31td2wnvx (ta=25 unless otherwise specified.)
technical note 35/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.261. output voltage fig.262. line regulation fig.263. circuit current ignd fig.264. vstby - istby fig.265. iout - ignd fig.266. load regulation fig.267. dropout voltage fig.268. ocp threshold fig.269. stby threshold fig.270. vout - temp fig.271. ignd - temp fig.272. ignd - temp (stby) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.511.522.533.544.555.5 input voltage (v) output voltage (v) temp=25c io=0ua io= 100ua io=50ma io=200ma vin=stby 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 input voltage (v) output voltage (v) temp=25c io=0ua io=100ua io=50ma io=200ma vin=stby 0 20 40 60 80 100 00.511.522.533.544.555.5 input voltage (v) gnd current (ua) io=0ua vin=stby temp=85c temp=25c temp=-40c 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 00.511.522.5 33.544.555.5 input voltage (v) stby pin current (ua) temp=-40c temp=25c temp=85c 0 20 40 60 80 100 0 0.05 0.1 0.15 0.2 output current (a) gnd current (ua) temp=-40c temp=25c temp=85c vin=4.3v stby=1.5v 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 0 0.1 0.2 0.3 0.4 0.5 0.6 output current (a) output voltage (v) vin=5.5v vin=3.8v vin=4.3v temp=25c stby=1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 00.5 11.5 stby voltage (v) output voltage (v) vin=4.3v io=0ma temp=-40c temp=25c temp=85c 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 -40 -15 10 35 60 85 temp (c) output voltage (v) vin=4.3v stby=1.5v io=0.1ma 0 10 20 30 40 50 60 -40 -15 10 35 60 85 temp ( c) gnd current (ua) vin=4.3v stby=1.5v io=0ma 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -40 -15 10 35 60 85 temp (c) gnd current (ua) vin=4.3v stby=0v 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 0 0.05 0.1 0.15 0.2 output current (a) output voltage (v) vin = 4.3v stby=1.5v temp=85c temp=25c temp=-40c 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 0.05 0.1 0.15 0.2 output current (a) dropout voltage (v) vin = 0.98 x vout stby=1.5v temp=-40c temp=25c temp=85c reference data bu33td2wnvx (ta=25 unless otherwise specified.)
technical note 36/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. reference data bu33td2wnvx (ta=25 unless otherwise specified.) fig.274. load response 3.35 3.30 3.25 3.40 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 0ma fig.276. load response 3.35 3.30 3.25 3.40 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=100ma 0ma fig.278. load response 3.40 3.30 3.20 3.50 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=200ma 0ma fig.280. load response 3.35 3.30 3.25 3.40 out p ut volta g e ( v ) iout=100ma 50ma output current (ma) 50 100 0 fig.273. load response 3.30 3.25 3.20 3.35 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 50ma fig.275. load response 3.30 3.25 3.20 3.35 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=0ma 100ma fig.279. load response 3.30 3.25 3.20 3.35 out p ut volta g e ( v ) output current (ma) 50 100 0 iout=50ma 100ma fig.277. load response 3.30 3.20 3.10 3.40 out p ut volta g e ( v ) output current (ma) 100 200 0 iout=0ma 200ma
technical note 37/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig.281. start up time iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.282. start up time iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=0 1.5v fig.283. start up time (vin=stby) iout=0ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.3 v fig.284. start up time (vin=stby) iout=200ma 2.0 0.0 4.0 output voltage (v) stby voltage (v) 2.0 4.0 0.0 vin=stby=0 4.3v reference data bu33td2wnvx (ta=25 unless otherwise specified.) fig.285. discharge time 2.0 0.0 4.0 output voltage (v) stby voltage (v) 1.0 2.0 0.0 stby=1.5 0v fig.286. vin response 3.30 3.29 3.28 3.31 out p ut volta g e ( v ) input voltage (v) 5.3 6.3 4.3 vin=4.3v 5.3v 5.3v
technical note 38/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. 0 0.1 0.2 0.3 0.4 0.5 0.6 0 25 50 75 100 125 ta [ ] pd [w] 0.56w 85 0.39w ? about power dissipation (pd) as for power dissipation, an approximate es timate of the heat reduction characteri stics and internal power consumption of ic are shown, so please use these for reference. since power dissipation changes substantially depending on the implementation conditions (board size, board thickness, metal wiring rate, number of layers and through holes, etc.), it is recommended to measure pd on a set board. exceeding the power dissipation of ic may lead to deterioration of the original ic performance, such as causing operation of the thermal shutdown circuit or reducti on in current capability. therefore, be sure to prepare sufficient margin within power dissipation for usage. calculation of the maximum internal power consumption of ic (pmax) pmax=(vin-vout)iout(max.) (vin: input voltage vout: output volt age iout(max): maximum output current) measurement conditions standard rohm board evaluation board 1 layout of board for measurement ic implementation position top layer (top view) top layer (top view) bottom layer (top view) bottom layer (top view) measurement state with board implemented (wind spee d 0 m/s) with board implemented (wind speed 0 m/s) board material glass epoxy resin (double-side board) glass epoxy resin (double-side board) board size 70 mm x 70 mm x 1.6 mm 40 mm x 40 mm x 1.6 mm wiring rate top layer metal (gnd) wiring rate: approx. 0% metal (gnd) wiring rate: approx. 50% bottom layer metal (gnd) wiring rate: approx . 50% metal (gnd) wiring rate: approx. 50% through hole diameter 0.5mm x 6 holes diameter 0.5mm x 25 holes power dissipation 0.56w 0.39w thermal resistance ja=178.6c/w ja=256.4 /w * please design the margin so that pmax becomes is than pd (pmax pd) within the usage temperature range. figure 287. sson004x1010 power dissipation he at reduction characteristics (reference) standard rohm board evaluation board 1
technical note 39/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. device name and marking symbol description marking a output voltage 12 1.2v typ. b 15 1.5v typ. c 18 1.8v typ. d 19 1.9v typ. f 25 2.5v typ. h 26 2.6v typ. j 27 2.7v typ. k 28 2.8v typ. l 30 3.0v typ. p 31 3.1v typ. q 33 3.3v typ. u fig.288. package dimension and marking lot no. marking 1 vout 2 gnd 3 stby 4 vin heatshink is connected to gnd (unit:mm) a device name bu td2wnvx
technical note 40/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. fig. 289. example of bypass diode connection reverse current vin gnd stby out notes for use 1) about absolute maximum rating breakage may occur when absolute maximum ratings such as applied voltage and operating temperature range are exceeded. short mode or open mode cannot be specified at o ccurrence of a break, so please prepare physical safety measures (e.g., fuse) if such special mode in which the absolute maximum rating is exceeded can be assumed. 2) about gnd potential please be sure that the potential of the gnd terminal is the lowest in any operating condition. 3) about thermal design please provide thermal design with sufficient margin, taking power dissipation (pd) in actual usage conditions into consideration. 4) about short between pins and misattachment please be careful regarding the ic direction and misalignment at attachment onto a printed ci rcuit board. misattachment may cause a break of ic. short caused by foreign matter be tween outputs, output and power supply, or gnds may also lead to a break. 5) about operation in a st rong electromagnetic field please note that usage in a strong electr omagnetic field may cause malfunction. 6) about common impedance please give due consideration to wiring of the power sour ce and gnd by reducing common-mode ripple or making ripple as small as possible (e.g., making the wiring as thick and short as possible, or reducing ripple by l ? c), etc. 7) about stby terminal voltage set stby terminal voltage to 0.3 v or less to put each channel into a standby state and to 1.2 v or more to put each channel into an operating state. do not fix stby terminal voltage to 0.3 v or more and 1.2 v or less or do not lengthen the transition time. this may cause malfunction or failure. when shorting the vin terminal and stby terminal for usage, the status will be ?stby=vin=low? at turning the power off, and discharge of the vout terminal cannot operate, which means voltage may remain for a certain time in the vout terminal. since turning the power on again in this stat e may cause overshoot, turn the power on for use after the vout terminal is completely discharged. 8) about overcurrent protection circuit output has a built-in overcurrent protection circuit, which prevents ic break at load short. note that this protection circuit is effective for prevention of breaks due to unexpected accidents. please avoid us age by which the protection circuit operates continuously. 9) about thermal shutdown output is off when the thermal circuit operates since a tem perature protection circuit is built in to prevent thermal breakdown. however, it recovers when the temperature returns to a certain temperature. the thermal circuit operates at emergency such as overheating of ic. sinc e it is prepared to prevent ic breakdown, please do not use it in a state in which protection works. ? about reverse current for applications on which reverse current is assumed to flow into ic, it is recommended to prepare a path to let the current out by putting a bypass diode between the vin-vout terminals. ? about testing on a set board when connecting a capacitor to a terminal with low impedance for testing on a set board, please be sure to discharge for each process since ic may be stressed. as a countermeasure against static electricit y, prepare grounding in the assembly process and take sufficient care in transportation and storage. in addition, when connecting a capacitor to a jig in a testing process, please do so after turning the power off and remove it after turning the power off.
technical note 41/41 bu td2wnvx series www.rohm.com 2011.01 - rev.b ? 2011 rohm co., ltd. all rights reserved. ordering part number b d 1 0 t d 2 w n v x - t l part no. output voltage 10 : 1.0v 12 : 1.2v 15 : 1.5v 18 : 1.8v 1j : 1.85v 19 : 1.9v 20 : 2.0v 21 : 2.1v 23 : 2.3v 25 : 2.5v 26 : 2.6v 27 : 2.7v 28 : 2.8v 2j : 2.85v 29 : 2.9v 30 : 3.0v 31 : 3.1v 32 : 3.2v 33 : 3.3v 34 : 3.4v line up package nvx : sson004x1010 packaging and forming specification tl: embossed tape and reel sson004x1010 (unit : mm ) 1.00.1 1.00.1 1pin mark 0.6max 0.02 +0.03 ?0.02 s 0.05 (0.12) 0.650.05 0.480.05 0.070.1 0.250.05 0.250.1 1 45 4 2 3 3-c0.18 r0.05 0. 480.05 0.320.1 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the lower left when you hold reel on the left hand and you pull out the tape on the left hand 5000pcs tl () direction of feed reel 1pin
r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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