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3a low dropout linear regulator az1085c data sheet 1 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited general description the az1085c is a series of low dropout positive volt- age regulators with a maximum dropout of 1.5v at 3a of load current. the series features on-chip thermal shutdown. it also includes a bandgap reference and a current limiting cir- cuit. the az1085c is available in 1.5v, 1.8v, 2.5v, 3.3v, 5.0v and adjustable versions. the fixed versions inte- grate the adjust resistors. the adjustable version can set the output voltage with two external resistors. the az1085c series is avai lable in standard packages of to-263-3, to-263-2, to-252-2 (3) and to-252-2 (4). features low dropout voltage: typical 1.3v at 3a current limiting and thermal protection output current: 3a current limit: 4.5a operating junction temperature: 0 to 125 o c compatible with low esr ceramic capacitor line regulation: 0.015% (typ) load regulation: 0.1% (typ) applications high efficiency linear regulators battery charger post regulation for switching supplies microprocessor supply mother board power supplies dvd-video player telecom equipment set top boxes and web boxes modules' supply figure 1. package types of az1085c to-263-2 to-263-3 to-252-2 (3) to-252-2 (4)
3a low dropout linear regulator az1085c data sheet 2 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited figure 2. pin configuration of az1085c (top view) pin configuration s package (to-263-3) s2 package (to-263-2) d package (to-252-2 (3)) 1 2 3 input output adj/gnd input output (tab) adj/gnd 1 2 3 (to-252-2 (4)) 1 2 3 input output adj/gnd 1 2 3 input output adj/gnd
3a low dropout linear regulator az1085c data sheet 3 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited thermal protection + - for adjustable output, disconnect a1 and a2, connect b input output adj/ gnd a1 a2 b for fixed output, connect a1 and a2, disconnect b functional block diagram figure 3. functional block diagram of az1085c 3 2 1
3a low dropout linear regulator az1085c data sheet 4 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited ordering information package temperature range part number marking id packing type lead free green lead free green to-263-3 0 to 125 o c az1085cs-adje1 az1085cs-adjg1 az1085cs-adje1 az1085cs-adjg1 tube az1085cs-adjtre1 az1085cs-adjtrg1 az1085cs-adje1 az1085cs-adjg1 tape & reel az1085cs-1.5e1 az1085cs-1.5g1 az1085cs-1.5e1 az1085cs-1.5g1 tube az1085cs-1.5tre1 az1085cs-1.5trg1 az1085cs-1.5e1 az1085cs-1.5g1 tape & reel az1085cs-1.8e1 az1085cs-1.8g1 az1085cs-1.8e1 az1085cs-1.8g1 tube az1085cs-1.8tre1 az1085cs-1.8trg1 az1085cs-1.8e1 az1085cs-1.8g1 tape & reel az1085cs-2.5e1 az1085cs-2.5g1 az1085cs-2.5e1 az1085cs-2.5g1 tube az1085cs-2.5tre1 az1085cs-2.5trg1 az1085cs-2.5e1 az1085cs-2.5g1 tape & reel az1085cs-3.3e1 az1085cs-3.3g1 az1085cs-3.3e1 az1085cs-3.3g1 tube az1085cs-3.3tre1 az1085cs-3.3trg1 az1085cs-3.3e1 az1085cs-3.3g1 tape & reel az1085cs-5.0e1 az1085cs-5.0g1 az1085cs-5.0e1 az1085cs-5.0g1 tube az1085cs-5.0tre1 az1085cs-5.0trg1 az1085cs-5.0e1 az1085cs-5.0g1 tape & reel to-263-2 0 to 125 o c az1085cs2-adje1 az1085cs2-adjg1 az1085cs2-adje1 az1085cs2-adjg1 tube az1085cs2-adjtre1 az1085cs2-adjtrg1 az1085cs2-adje1 az1085cs2-adjg1 tape & reel az1085cs2-1.5e1 az1085cs2-1.5g1 az1085cs2-1.5e1 az1085cs2-1.5g1 tube az1085cs2-1.5tre1 az1085cs2-1.5trg1 az1085cs2-1.5e1 az1085cs2-1.5g1 tape & reel az1085cs2-1.8e1 az1085cs2-1.8g1 az1085cs2-1.8e1 az1085cs2-1.8g1 tube az1085cs2-1.8tre1 az1085cs2-1.8trg1 az1085cs2-1.8e1 az1085cs2-1.8g1 tape & reel az1085cs2-2.5e1 az1085cs2-2.5g1 az1085cs2-2.5e1 az1085cs2-2.5g1 tube az1085cs2-2.5tre1 az1085cs2-2.5trg1 az1085cs2-2.5e1 az1085cs2-2.5g1 tape & reel az1085cs2-3.3e1 az1085cs2-3.3g1 az1085cs2-3.3e1 az1085cs2-3.3g1 tube az1085cs2-3.3tre1 az1085cs2-3.3trg1 az1085cs2-3.3e1 az1085cs2-3.3g1 tape & reel az1085cs2-5.0e1 az1085cs2-5.0g1 az1085cs2-5.0e1 az1085cs2-5.0g1 tube az1085cs2-5.0tre1 az1085cs2-5.0trg1 az1085cs2-5.0e1 az1085cs2-5.0g1 tape & reel circuit type package adj: adjustable output e1: lead free g1: green az1085c - tr: tape and reel blank: tube s: to-263-3 1.5: fixed output 1.5v 1.8: fixed output 1.8v 2.5: fixed output 2.5v 3.3: fixed output 3.3v 5.0: fixed output 5.0v s2: to-263-2 d: to-252-2 (3)/to-252-2 (4)
3a low dropout linear regulator az1085c data sheet 5 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited ordering information (continued) package temperature range part number marking id packing type to-252-2(3)/to-252-2(4) 0 to 125 o c az1085cd-adjtrg1 az1085cd-adjg1 tape & reel az1085cd-1.5trg1 az1085cd-1.5g1 tape & reel az1085cd-1.8trg1 az1085cd-1.8g1 tape & reel az1085cd-2.5trg1 az1085cd-2.5g1 tape & reel az1085cd-3.3trg1 az1085cd-3.3g1 tape & reel az1085cd-5.0trg1 az1085cd-5.0g1 tape & reel bcd semiconductor's pb-free products, as designated with "e1" suffix in the pa rt number, are rohs compliant. products with "g1" suffix are available in green packages.
3a low dropout linear regulator az1085c data sheet 6 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited note 1: stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings on ly, and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditions" is not implied. exposure to "absolute max- imum ratings" for extended periods may affect device reliability. note 2: absolute maximum ratings indicate limits beyond which damage to the component may occur. electrical specifications do not apply when operating the device outside of its operating ratings. the maximum allowable power dissipation is a function of the maximum junction temperature, t j(max), the junction-to-ambient thermal resistance, ja, and the ambient temperature, t a. the maximum allowable power dissipation at any ambient tem- perature is calculated using: p d(max) =(t j(max) -t a )/ ja. exceeding the maximum allowa ble power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. recommended oper ating conditions parameter symbol value unit operating junction temperature t j 150 o c storage temperature range t stg -65 to 150 o c lead temperature (soldering, 10sec) t lead 260 o c thermal resistance (note 2) ja to-263-3 75 o c/w to-263-2 75 to-252-2 (3)/to-252-2 (4) 100 esd (human body model) esd 2000 v parameter symbol min max unit input voltage v in 12 v operating junction temperature range t j 0125 o c absolute maximum ratings (note 1)
3a low dropout linear regulator az1085c data sheet 7 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited electrical characteristics parameter symbol conditions min typ max unit reference voltage v ref az1085c-adj, i out =10ma,v in -v out =3v, t j =25 o c, 10ma i out 3a, 1.5v v in -v out 5v 1.238 1.225 1.250 1.250 1.262 1.275 v output voltage v out az1085c-1.5, i out =0ma, v in =4.5v, t j =25 o c, 10ma i out 3a, 3.0v v in 6v 1.485 1.47 1.5 1.5 1.515 1.53 v az1085c-1.8, i out =0ma, v in =4.8v, t j =25 o c, 10ma i out 3 a, 3.3v v in 7v 1.782 1.764 1.8 1.8 1.818 1.836 v az1085c-2.5, i out =0ma, v in =5.5v, t j =25 o c, 10ma i out 3a, 4.0v v in 7v 2.475 2.45 2.5 2.5 2.525 2.55 v az1085c-3.3, i out =0ma, v in =6.3v, t j =25 o c, 10ma i out 3a, 4.8v v in 8v 3.267 3.234 3.3 3.3 3.333 3.366 v az1085c-5.0, i out =0ma, v in =8v, t j =25 o c, 10ma i out 3a, 6.5v v in 10v 4.95 4.9 5 5 5.05 5.1 v line regulation v out az1085c-adj, i out =10ma, 2.85v v in 10v 0.015 0.035 0.2 0.2 % az1085c-1.5, i out =10ma, 3.0v v in 10v 0.5 1 6 6 mv az1085c-1.8, i out =10ma, 3.3v v in 10v 0.5 1 6 6 mv az1085c-2.5, i out =10ma, 4.0v v in 10v 0.5 1 6 6 mv az1085c-3.3, i out =10ma, 4.8v v in 10v 0.5 1 6 6 mv az1085c-5.0, i out =10ma, 6.5v v in 10v 0.5 1 10 10 mv typicals and limits appearing in normal type apply for t j =25 o c. limits appearing in boldface type apply over the entire operating junctio n temperature range 0 to 125 o c.
3a low dropout linear regulator az1085c data sheet 8 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited electrical characteristics (continued) parameter symbol conditions min typ max unit load regulation v out az1085c-adj, 0ma i out 3a, v in -v out =3v 0.1 0.2 0.3 0.4 % az1085c-1.5, 0ma i out 3a, v in -v out =3v 3 7 15 20 mv az1085c-1.8, 0ma i out 3a, v in -v out =3v 3 7 15 20 mv az1085c-2.5, 0ma i out 3a, v in -v out =3v 3 7 15 20 mv az1085c-3.3, 0ma i out 3a, v in -v out =3v 3 7 15 20 mv az1085c-5.0, 0ma i out 3a, v in -v out =3v 5 10 20 35 mv dropout voltage v drop i out =3a, v ref, v out =1% 1.3 1.5 v thermal resistance (junction to case) jc to-263-3 6.34 o c/w to-263-2 6.34 to-252-2 (3)/to-252-2 (4) 7.36 current limit i limit v in -v out =3v 3.2 4.5 a minimum load current i load (min) v in =10v (az1085c-adj) 3 10 ma quiescent current i q v in =10v (az1085c) 5 10 ma ripple rejection psrr f ripple =120hz, c out =25 f, i out =3a, v in -v out = 3v 60 72 db adjust pin current i adj v in = 4.25v, i out = 10ma 55 120 a adjust pin current change i adj 10ma i out 3a, 1.5v v in -v out 6v 0.2 5 a long term stability t a = 125 o c, 1000hrs 0.5 % temperature stability i out =10ma, v in -v out =1.5v 0.5 % rms noise (% of v out ) t a =25 o c, 10hz f 10khz 0.003 % typicals and limits appearing in normal type apply for t j =25 o c. limits appearing in boldface type apply over the entire operating junctio n temperature range 0 to 125 o c.
3a low dropout linear regulator az1085c data sheet 9 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited typical performance characteristics figure 4. line regulation vs. junction temperature figure 6. dropout voltage vs. junction temperature 0 25 50 75 100 125 1.00 1.05 1.10 1.15 1.20 dropout voltage (v) junction temperature ( o c) 0 25 50 75 100 125 -1 0 1 2 3 4 5 line regulation (mv) junction temperature ( o c) 0 25 50 75 100 125 -5 -4 -3 -2 -1 0 1 2 3 4 5 load regulation (mv) junction temperature ( o c) figure 5. load regulation vs. junction temperature 0255075100125 2.47 2.48 2.49 2.50 2.51 2.52 2.53 output voltage (v) junction temperature ( o c) figure 7. output voltage vs. junction temperature
3a low dropout linear regulator az1085c data sheet 10 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited typical performance ch aracteristics (continued) figure10. reference voltage vs. junction temperature figure 8. short circuit current vs. dropout voltage 024681012 0 1 2 3 4 5 6 7 short circuit current (a) dropout voltage (v) 0 25 50 75 100 125 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 reference voltage (v) junction temperature ( o c) figure 9. dropout voltage vs. output current figure11. minimum load current vs. junction temperature 0 20 40 60 80 100 120 0.74 0.76 0.78 0.80 0.82 0.84 minimum load current (ma) junction temperature ( o c) az1085c-adj 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 dropout voltage (v) output current (a)
3a low dropout linear regulator az1085c data sheet 11 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited figure 15. line transient response typical performance ch aracteristics (continued) (conditions: v in =4.5v to 6.5v, v out =2.5v, i out =200ma, c in =1 f, c out =10 f) v out (20mv/div) v in (1v/div) time (200 s/div) 4.5 5.5 6.5 -20 0 20 40 3.5 2.5 figure 14. load transient response (conditions: v in =5.5v, v out =2.5v, i out =100ma to 3a, c in =c out =10 f) i out (1.5a/div) v out (100mv/div) time (100 s/div) 0 1.5 3 -100 0 100 200 -1.5 0.1a -3 0 20 40 60 80 100 120 60 62 64 66 68 70 72 74 76 78 80 adjust pin current ( a) junction temperature ( o c) figure12. adjust pin current vs. junction temperature 0.0 0.5 1.0 1.5 2.0 2.5 3.0 80 78 76 74 72 70 68 66 64 62 60 adjust pin current ( a) output current (a) figure13. adjust pin current vs. output current
3a low dropout linear regulator az1085c data sheet 12 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited typical performance ch aracteristics (continued) figure16. power dissipation vs. case temperature 10 100 1k 10k 100k 1m 0 10 20 30 40 50 60 70 80 90 psrr (db) frequency (hz) figure17. psrr vs. frequency 0 20 40 60 80 100 120 0 2 4 6 8 10 12 14 power dissipation (w) case temperature ( o c) package :to-263-3
3a low dropout linear regulator az1085c data sheet 13 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited figure 18. typical applications of az1085c typical application az1085c- adj v in v out adj v in 10 f 150 r2 22 f v in az1085c-5.0 v in v out gnd 10 f 22 f v out v out r1 v out =v ref * (1+r2/r1 ) + i adj * r2 150
3a low dropout linear regulator az1085c data sheet 14 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited mechanical dimensions to-263-3 unit: mm(inch) 7 3 7 8 . 6 4 0 ( 0 . 3 4 0 ) 9 . 6 5 0 ( 0 . 3 8 0 ) 0.990(0.039) 0.510(0.020) 2.540(0.100) 1.150(0.045) 9.650(0.380) 3 1 4 . 7 6 0 ( 0 . 5 8 1 ) 8.840(0.348) 2.640(0.104) 0.020(0.001) 8 2 0 6 0.380(0.015) 2 . 3 9 0 ( 0 . 0 9 4 ) 0.360(0.014) 2 . 2 0 0 ( 0 . 0 8 7 ) 70 10.290(0.405) 4 . 0 7 0 ( 0 . 1 6 0 ) 4 . 8 2 0 ( 0 . 1 9 0 ) 1.390(0.055) 1.150(0.045) 1.390(0.055) 2.540(0.100) 1.270(0.050) 1.390(0.055) 2 . 6 9 0 ( 0 . 1 0 6 ) 1 5 . 7 4 0 ( 0 . 6 2 0 ) 0.250(0.010) 2.700(0.106) 0.400(0.016) 5 . 6 0 0 ( 0 . 2 2 0 ) 7.420(0.292) 7.980(0.314) 2.540(0.100) 2.540(0.100)
3a low dropout linear regulator az1085c data sheet 15 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited mechanical dimens ions (continued) to-263-2 unit: mm(inch) 7 3 7 8 . 6 4 0 ( 0 . 3 4 0 ) 9 . 6 5 0 ( 0 . 3 8 0 ) 0.990(0.039) 0.510(0.020) 2.540(0.100) 1.150(0.045) 9.650(0.380) 3 1 4 . 7 6 0 ( 0 . 5 8 1 ) 8.840(0.348) 2.640(0.104) 0.020(0.001) 8 2 0 6 0.380(0.015) 2 . 3 9 0 ( 0 . 0 9 4 ) 0.360(0.014) 2 . 2 0 0 ( 0 . 0 8 7 ) 70 10.290(0.405) 4 . 0 7 0 ( 0 . 1 6 0 ) 4 . 8 2 0 ( 0 . 1 9 0 ) 1.390(0.055) 1.150(0.045) 1.390(0.055) 2.540(0.100) 1.270(0.050) 1.390(0.055) 2 . 6 9 0 ( 0 . 1 0 6 ) 1 5 . 7 4 0 ( 0 . 6 2 0 ) 0.250(0.010) 2.700(0.106) 0.400(0.016) 5 . 6 0 0 ( 0 . 2 2 0 ) 7.420(0.292) 7.980(0.314) 2.540(0.100) 2.540(0.100) 1.500(0.059)
3a low dropout linear regulator az1085c data sheet 16 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited mechanical dimens ions (continued) to-252-2 (3) unit: mm(inch) 1.290.1 2.900ref 1 .400(0.05 5 ) 1 .700(0.06 7 ) 0.470(0.019) 0.600(0.024) 5 9 0 8 9.800(0.386) 10.400(0.409) 2.200(0. 087) 2.380(0.094) 0.900(0. 035) 1.100(0.043) 4.700ref 6.500(0. 256) 6.700(0. 264) 5.130(0.202) 5.460(0.215) 0.150(0.006) 0.750(0.030) 6.000(0.236 ) 6.200(0.244 ) 0.720(0.028) 0.850(0.033) 2.286(0. 090) bsc 0.720(0.028) 0.900(0. 035) 0.900(0.035) 1.250(0.049) 1.800ref 8 0 0.600(0. 0 24) 1.000(0.039) 7 3 9 5 5.250ref option 1 option 2
3a low dropout linear regulator az1085c data sheet 17 jan. 2013 rev. 1. 7 bcd semiconductor manufacturing limited mechanical dimens ions (continued) to-252-2 (4) unit: mm(inch) 5.460(0.215) 4.960(0.195) 6.350(0.250) 6.730(0.265) 1.200.05 1.900(0.075) 1.700(0.067) 6.220(0.245) 5.970(0.235) 1.270(0.050) 0.890(0.035) 1.492(0.059) 1.145(0.045) 1.010(0.040) 1.124(0.044) 0.765(0.030) 2.290(0.090) 0.640(0.025) 0.884(0.035) max bsc 10.340(0.407) 9.940(0.391) 0.600(0.024) 0.460(0.018) 2.380(0.094) 2.180(0.086) 4.320(0.170) min min 5.210(0.205) 15 0 3 3 0.780(0.031) 0.650(0.026) 0.884(0.035) 0.640(0.025) 0.460(0.018) 0.610(0.024) 0.410(0.016) 0.560(0.022) detail a 2.160(0.085) min base metal plating section b-b 0.020(0.001) 0.120(0.005) 2.740(0.108) 1.500(0.059) ref 1.780(0.070) 0 10 seating plane gauge plane b b
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited

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