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this is information on a product in full production. april 2014 docid023965 rev 5 1/24 24 ldk120 200 ma low quiescent current very low noise ldo datasheet - production data features ? input voltage from 1.9 to 5.5 v ? very low dropout voltage (100 mv typ. at 100 ma load) ? low quiescent current (max. 100 a, 1 a in off mode) ? very low noise ? output voltage tolerance: 2.0% @ 25 c ? 200 ma guaranteed output current ? wide range of fixed output voltages available on request: from 0.8 v to 3.5 v with 100 mv step ? adjustable version: from 0.8 v to v in -v drop ? logic-controlled electronic shutdown ? compatible with ceramic capacitor c out = 1 f ? internal current and thermal limit ? available in sot23-5l, sot323-5l and dfn6 (1.2 x 1.3 mm) packages ? temperature range: -40 c to 125 c applications ? mobile phones ? personal digital assistants (pdas) ? cordless phones and similar battery-powered systems ? digital still cameras description the ldk120 low drop voltage regulator provides 200 ma of maximum current from an input supply voltage in the range of 1.9 v to 5.5 v, with a typical dropout voltage of 100 mv. it is stabilized with a ceramic capacitor on the output. the very low drop voltage, low quiescent current and low noise features make it suitable for low power battery-powered applications. an enable logic control function puts the ldk120 in shutdown mode allowing a total current consumption lower than 1 a. the device also includes a short-circuit constant current limiting and thermal protection. 627/ 627/ ')1[pp www.st.com
contents ldk120 2/24 docid023965 rev 5 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 9 order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
docid023965 rev 5 3/24 ldk120 diagram 1 diagram figure 1. block diagram
pin configuration ldk120 4/24 docid023965 rev 5 2 pin configuration figure 2. pin connection (top view) table 1. pin description (sot23-5l, sot323-5l) pin symbol function sot23/ sot323 dfn6 fixed adjustable d version 1 6 in input voltage of the ldo 2 2 gnd common ground 3 4 en enable pin logic input: low = shutdown, high = active 43 byp (1) /adj /nc 1. bypass capacitor for noise reduction on fixed version is optional, if not used the relevant pin must be left floating with no routing on the board. bypass capacitor adjustable pin internally not connected 5 1 out output voltage of the ldo - 5 n/c not connected. this pin should be connected to gnd sot23-5l, sot323-5l dfn6 (1.2 x 1.3) #:1"%+/$
docid023965 rev 5 5/24 ldk120 typical application 3 typical application figure 3. typical application circuits for fixed version figure 4. typical application circuits for d version figure 5. typical application circuits for adjustable version ,1 287 (1 *1' %<3$66 2)) 21 & %<3 & r ?) & , ?) 9 , 9 r ,1 287 (1 *1' 2)) 21 & r ?) & , ?) 9 , 9 r v o =v adj (1+r 1 /r 2 )
maximum ratings ldk120 6/24 docid023965 rev 5 4 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. all values are referred to gnd. table 2. absolute maximum ratings symbol parameter value unit v in dc input voltage - 0.3 to 7 v v out dc output voltage - 0.3 to v i + 0.3 v v en enable input voltage - 0.3 to v i + 0.3 v v byp/adj adj/bypass pin voltage 2 v i out output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range - 65 to 150 c t op operating junction temperature range - 40 to 125 c table 3. thermal data symbol parameter sot23-5l sot323-5l dfn-6l unit r thja thermal resistance junction-ambient 160 246 237 c/w r thjc thermal resistance junction-case 68 134 104 c/w
docid023965 rev 5 7/24 ldk120 electrical characteristics 5 electrical characteristics t j = 25 c, v in = v out(nom) + 1 v, c in = c out = 1 f, i out = 1 ma, v en = v in , unless otherwise specified. table 4. electrical characteristics for ldk120 (fixed version) symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.9 5.5 v v out v out accuracy i out =1 ma, t j =25 c -2.0 2.0 % i out =1 ma, -40 c electrical characteristics ldk120 8/24 docid023965 rev 5 t j = 25 c, v in = v out(nom) + 1 v, c in = c out = 1 f, i out = 1 ma, v en = v in , unless otherwise specified. table 5. electrical characteristics for ldk120 (adjustable version) symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.9 5.5 v v adj v adj accuracy i out =1 ma, t j =25 c 784 800 816 mv i out =1 ma, -40 c docid023965 rev 5 9/24 ldk120 typical performance characteristics 6 typical performance characteristics c in = c out = 1 f, v en to v in , unless otherwise specified. figure 6. output voltage vs. temp. for adjustable (i o = 1 ma) figure 7. output voltage vs. temp. for adjustable version (i o = 200 ma) figure 8. output voltage vs. temp. for fixed version (i o = 1 ma) figure 9. output voltage vs. temp. for fixed version (i o = 200 ma) figure 10. line regulation vs. temp. for adjustable version figure 11. short-circuit current vs. temp. for adjustable version am12800v1 0.750 0.760 0.770 0.780 0.790 0.800 0.810 0.820 0.830 0.840 0.850 -50 -25 0 25 50 75 100 125 150 v adj [ v ] temperature [c] v in = 1.9 v, i out = 1 ma am16197v1 v in = 1.9 v, i out = 200 ma 0.750 0.760 0.770 0.780 0.790 0.800 0.810 0.820 0.830 0.840 0.850 -50 -25 0 25 50 75 100 125 150 v adj [v] temperature [c] am16198v1 v in = 4 v, i out = 1 ma 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 -50 -25 0 25 50 75 100 125 150 v out [v] temperature [c] am16199v1 v in = 4 v, i out = 200 ma v out [v] 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 -50 -25 0 25 50 75 100 125 150 temperature [c] am16200v1 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 -50 -25 0 25 50 75 100 125 150 line regulation [%/v] temperature [c] v in from 1.9 v to 5.5 v, i out = 1 ma am16201v1 200 250 300 350 400 450 500 550 600 -50 -25 0 25 50 75 100 125 150 i short [ma] temperature [c] v in = 1.9 v
typical performance characteristics ldk120 10/24 docid023965 rev 5 figure 12. load regulation vs. temp. for adjustable version figure 13. load regulation vs. temp. for fixed version figure 14. enable pin thresholds vs. temp. (v in = 1.9 v) figure 15. enable pin thresholds vs. temp. figure 16. quiescent current vs. temp. for adjustable version (i o = 0 ma) figure 17. quiescent current vs. temp. for adjustable version (i o = 200 ma) am16202v1 0 0.002 0.004 0.006 0.008 0.01 -50 -25 0 25 50 75 100 125 150 load regulation [%/ma] temperature [c] v in = 1.9 v, i out from 1 ma to 200 ma am16203v1 0 0.002 0.004 0.006 0.008 0.01 -50 -25 0 25 50 75 100 125 150 load regulation [%/ma] temperature [c] v in = 4 v, i out from 1 ma to 200 ma am16204v1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 v en thresholds [v] temperature [c] v in = 1.9 v, i out = 1 ma low high am16205v1 v in = 5.5 v, i out = 1 ma 0.000 0.200 0.400 0.600 0.800 1.000 1.200 1.400 1.600 -50 -25 0 25 50 75 100 125 150 v en thresholds [v] temperature [c] low high am16206v1 v in = 1.9 v, i out = 0 ma 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 quiescent current [a] temperature [ c] am16207v1 0 20 40 60 80 100 120 140 160 180 200 -50 -25 0 25 50 75 100 125 150 quiescent current [a] temperature [ c] v in = 1.9 v, i out = 200 ma
docid023965 rev 5 11/24 ldk120 typical performance characteristics figure 18. quiescent current vs. temp. for fixed version (i o = 0 ma) figure 19. quiescent current vs. temp. for fixed version (i o = 200 ma) figure 20. shutdown current vs. temperature figure 21. svr vs. frequency (v o = 2.5 v) figure 22. svr vs. frequency (v o = v adj ) figure 23. output noise vs. frequency (v o = 3.3 v) am16208v1 v in = 4 v, i out = 0 ma 0 10 20 30 40 50 60 70 80 90 100 -50 -25 0 25 50 75 100 125 150 quiescent current [a] temperature [c] am16209v1 v in = 4 v, i out = 200 ma 0 20 40 60 80 100 120 140 160 180 200 -50 -25 0 25 50 75 100 125 150 quiescent current [a] temperature [c] am16210v1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -50 -25 0 25 50 75 100 125 150 quiescent current [a] temperature [c] v in = 4 v , v en = gnd am16211v1 0 10 20 30 40 50 60 70 80 100 1000 10000 100000 svr [db] v out = 2.5 v, v in = v out + 0.5 v +/ - 100 mv, i out = 10 ma cbyp =10 nf no cbyp frequency [hz] am16212v1 v out = v , v in = v out + 0.5 v +/ - 100 mv, i out = 10 ma 0 10 20 30 40 50 60 70 80 100 1000 10000 100000 svr [db] frequency [hz] adj am16213v1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1000 10000 100000 en [v /sqrt (hz)] frequency (hz) v in = 4.3 v, i out = 10 ma cbyp = 10 nf no cbyp
typical performance characteristics ldk120 12/24 docid023965 rev 5 figure 24. output noise vs. frequency (v o = v adj ) figure 25. stability region vs. c out (fixed) v in = v en = 4 to 5.5 v, i out = 10 ma to 0.2 a, c in = 1 f, t a = 25 c am16214v1 v in = 1.8 v, i out = 10 ma 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1000 10000 100000 en [v /sqrt (hz)] frequency [hz] am16215v1 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 esr @ 100 khz [ ] c out [f] (nominal value) stability area figure 26. stability region vs c out (adjust.) figure 27. line transient (v out = v adj ) v in = v en = 1.9 to 5.5 v, i out = 10 ma to 0.2 a, c in = 1 f, t a = 25 c v out = v adj, v in = 3.5 v to 4 v, v en = 2 v, i out = 1 ma, no c in , c out = 1 f, t r = t f = 5 s figure 28. line transient (v out = 3 v) figure 29. load transient (v out = 3 v) v out = 3 v, v in = 4 v to 4.5 v, v en = 2 v, i out = 1 ma, no c in , c out = 1 f, t r = t f = 5 s v out = 3 v, v in = v en = 3.5 v, i out = 1 ma to 200 ma, c out = 1 f, t r = t f = 5 s am16216v1 esr @ 100 khz [ ] c out [f] (nominal value) 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 stability area
docid023965 rev 5 13/24 ldk120 typical performance characteristics figure 30. load transient (v out = v adj ) figure 31. startup transient v out = v adj , v in = v en = 3.5 v, i out = 1 ma to 200 ma, c out = 1 f, t r = t f = 5 s v out = 3 v, v in = v en = 0 to 4.2 v, i out = 1 ma, c in = c out = 1 f, t r = t f = 5 s figure 32. enable transient (v out = v adj ) figure 33. enable transient (v out = 3 v) v out @ 0.8 v, v in = 1.9, v en = 0 to v in , i out = 200 ma, c out = 1 f, t r = t f = 1 s v in = 4 v, v en = 0 to v in , i out = 200 ma, c in = c out = 1 f, t r = t f = 1 s figure 34. dropout voltage vs. temperature (i out = 100 ma) figure 35. dropout voltage vs. temperature (i out = 200 ma) am16226v1 0 50 100 150 200 250 300 -50 -25 0 25 50 75 100 125 150 dropout voltage [mv] temperature [ c] c in = c out = 1 f, i out = 100 ma, fixed 3.0 v version am16227v1 c in = c out = 1 f, i out = 200 ma, fixed 3.0 v version 0 50 100 150 200 250 300 -50 -25 0 25 50 75 100 125 150 dropout voltage [mv] temperature [c]
package mechanical data ldk120 14/24 docid023965 rev 5 7 package mechanical data in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack specifications, grade definitions and product status are available at: www.st.com . ecopack is an st trademark. figure 36. sot23-5l mechanical drawing bn
docid023965 rev 5 15/24 ldk120 package mechanical data figure 37. sot23-5l footprint (dimensions in mm) table 6. sot23-5l mechanical data dim. mm min. typ. max. a 0.90 1.45 a1 0 0.15 a2 0.90 1.30 b 0.30 0.50 c 2.09 0.20 d2.95 e1.60 e0.95 h2.80 l 0.30 0.60 08 bn
package mechanical data ldk120 16/24 docid023965 rev 5 figure 38. dfn6l (1.2 x 1.3 mm) drawing b$
docid023965 rev 5 17/24 ldk120 package mechanical data figure 39. dfn6l footprint (dimensions in mm) table 7. dfn6l (1.2 x 1.3 mm) mechanical data dim. mm min. typ. max. a 0.41 0.45 0.50 a1 0.00 0.02 0.05 d- 1.20 - e- 1.30 - e- 0.40 - b 0.15 0.18 0.25 l 0.475 0.525 0.575 l3 0.375 0.425 0.475 aaa - 0.05 - b$
package mechanical data ldk120 18/24 docid023965 rev 5 figure 40. sot323-5l drawing bi
docid023965 rev 5 19/24 ldk120 package mechanical data table 8. sot323-5l mechanical data dim. mm min. typ. max. a0.80 1.10 a1 0 0.10 a2 0.80 0.90 1 b0.15 0.30 c0.10 0.22 d 1.80 2 2.20 e 1.80 2.10 2.40 e1 1.15 1.25 1.35 e0.65 e1 1.30 l 0.26 0.36 0.46 < 0 8
packaging mechanical data ldk120 20/24 docid023965 rev 5 8 packaging mechanical data figure 41. sot23-5l and sot323-xl tape and reel drawing
docid023965 rev 5 21/24 ldk120 packaging mechanical data table 9. sot23-5l tape and reel mechanical data dim. mm min. typ. max. a 180 c 12.8 13.0 13.2 d20.2 n60 t 14.4 ao 3.13 3.23 3.33 bo 3.07 3.17 3.27 ko 1.27 1.37 1.47 po 3.9 4.0 4.1 p 3.9 4.0 4.1 table 10. sot323-xl tape and reel mechanical data dim. mm min. typ. max. a 175 180 185 c12.81313.2 d20.2 n59.56060.5 t 14.4 ao 2.25 bo 3.17 ko 1.2 po 3.9 4.0 4.1 p 3.9 4.0 4.2
order codes ldk120 22/24 docid023965 rev 5 9 order codes table 11. order codes packages output voltages sot323-5l sot23-5l dfn6l ldk120c-r ldk120m-r ldk120pu-r adj ldk120c08r ldk120m08r ldk120pu08r 0.8 v ldk120c10r ldk120m10r ldk120pu10r 1.0 v LDK120C11R ldk120m11r 1.1 v ldk120c12r ldk120m12r 1.2 v ldk120c15r ldk120m15r 1.5 v ldk120c18r ldk120m18r 1.8 v ldk120c25r ldk120m25r ldk120pu25r 2.5 v ldk120c28r ldk120m28r 2.8 v ldk120m29r ldk120pu29r 2.9 v ldk120c30r ldk120m30r ldk120pu30r 3.0 v ldk120c31r ldk120m31r 3.1 v ldk120c32r ldk120m32r ldk120pu32r 3.2 v ldk120dm33r 3.3 v ldk120c33r ldk120m33r 3.3 v ldk120c35r 3.5 v table 12. marking order codes packages output voltages marking ldk120dmxxr sot23-5l xx v dxx ldk120mxxr sot23-5l xx v kxx ldk120cxxr sot323-5l xx v kxx ldk120puxxr dfn-6l xx v xx ldk120m-r sot23-5l adj kad ldk120c-r sot323-5l adj kad ldk120pu-r dfn-6l adj ad
docid023965 rev 5 23/24 ldk120 revision history 10 revision history table 13. document revision history date revision changes 26-nov-2012 1 initial release 31-jan-2013 2 added new part number ldk120pu32r updated table 11 on page 22 18-oct-2013 3 rpn ldk120xx changed to ldk120. updated the features and the description in cover page. cancelled table1: device summary. updated section 7: package mechanical data , table 2: absolute maximum ratings and table 11: order codes . added section 8: packaging mechanical data . minor text changes. 10-mar-2014 4 updated table 11: order codes . 29-apr-2014 5 updated table 1: pin description (sot23-5l, sot323-5l) , table 4: electrical characteristics for ldk120 (fixed version) , table 5: electrical characteristics for ldk120 (adjustable version) , table 11: order codes and table 12: marking . added figure 4: typical application circuits for d version . minor text changes.
ldk120 24/24 docid023965 rev 5 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a particular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems with product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statem ents and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or register ed trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2014 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - swed en - switzerland - united kingdom - united states of america www.st.com

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