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this is information on a product in full production. september 2012 doc id 9614 rev 18 1/22 22 ld29150xx 1.5 a, very low drop voltage regulators datasheet ? production data features very low dropout voltage (typ. 0.4 at 1.5 a) guaranteed output current up to 1.5 a fixed and adjustable output voltage ( 1% at 25 c) internal current and thermal limit logic controlled electronic shutdown available in ppak and p2pak description the ld29150xx is a high current, high accuracy, low-dropout voltage regulator series. these regulators feature 400 mv dropout voltage and very low ground current. designed for high current loads, these devices are also used in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes. typical applications are in power supply switching post regulation, series power supply for monitors, series power supply for vcrs and tvs, computer systems and battery powered systems. dpak ppak p2pak table 1. device summary part numbers order codes output voltages dpak ppak p2pak ld29150xx18 LD29150DT18R 1.8 v ld29150xx25 ld29150dt25r 2.5 v ld29150xx33 ld29150dt33r ld29150p2t33r 3.3 v ld29150xx50 ld29150dt50r ld29150pt50r 5.0 v ld29150xx ld29150ptr adj www.st.com
contents ld29150xx 2/22 doc id 9614 rev 18 contents 1 diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ld29150xx diagram doc id 9614 rev 18 3/22 1 diagram * only for version with inhibit function. figure 1. schematic diagram for adjustable version figure 2. schematic diagram for fixed version
pin configuration ld29150xx 4/22 doc id 9614 rev 18 2 pin configuration * not connected for fixed version. figure 3. pin connections (top view) p2pak dpak ppak
ld29150xx typical application doc id 9614 rev 18 5/22 3 typical application * only for version with inhibit function. figure 4. application circuit v o = v ref (1 + r 1 /r 2 )
maximum ratings ld29150xx 6/22 doc id 9614 rev 18 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. table 2. absolute maximum ratings symbol parameter value unit v i dc input voltage 30 (1) 1. above 14 v the device is automatically in shut-down. v v o dc output voltage -0.3 to 20 v v inh inhibit input voltage -0.3 to 20 v i o output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range -55 to 150 c t op operating junction temperature range -40 to 125 c table 3. thermal data s y mb o l pa r am e t er d pa k p pa k p 2 pa k u ni t r thja thermal resistance junction-ambient 100 100 60 c/w r thjc thermal resistance junction-case 8 8 3 c/w
ld29150xx electrical characteristics doc id 9614 rev 18 7/22 5 electrical characteristics i o = 10 ma, t j = 25 c, v i = 3.8 v, v inh = 2 v ( note 3 ), c i = 330 nf, c o = 10 f, unless otherwise specified. note: 1 guaranteed by design. 2 dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with v o + 1 v applied to v i . 3 only for version with inhibit function. table 4. electrical characteristics of ld29150#18 symbol parameter test conditions min. typ. max. unit v o output voltage i o = 10 ma to 1.5 a, v i = 3 to 7.3 v t j = - 40 to 125c 1.782 1.8 1.818 v 1.764 1.836 v o load regulation i o = 10 ma to 1.5 a 0.2 1.0 % v o line regulation v i = 3 to 13 v 0.06 0.5 % svr supply voltage rejection f = 120 hz, v i = 3.8 1 v, i o = 0.75 a ( note 1 ) 62 72 db v drop dropout voltage i o = 250 ma, t j = - 40 to 125c ( note 2 )0.1 v i o = 0.75 a, t j = - 40 to 125c ( note 2 )0.2 i o = 1.5 a, t j = - 40 to 125c ( note 2 )0.40.7 i q quiescent current i o = 0.75 a, t j = - 40 to 125c 15 40 ma i o = 1.5 a, t j = - 40 to 125c 30 80 v i = 13 v, v inh = gnd, t j = - 40 to 125c 130 180 a i sc short circuit current v i - v o = 5.5 v 2.2 a v il control input logic low off mode, ( note 3 ), t j = - 40 to 125c 0.8 v v ih control input logic high on mode, ( note 3 ), t j = - 40 to 125c 2 v i inh control input current t j = - 40 to 125c, v inh = 13 v 5 10 a en output noise voltage b p = 10 hz to 100 khz, i o = 100 ma 72 v rms t shdn thermal shutdown 150 c
electrical characteristics ld29150xx 8/22 doc id 9614 rev 18 i o = 10 ma, t j = 25 c, v i = 4.5 v, v inh = 2 v ( note 3 ), c i = 330 nf, c o = 10 f, unless otherwise specified. note: 1 guaranteed by design. 2 dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with v o + 1 v applied to v i . 3 only for version with inhibit function. table 5. electrical characteristics of ld29150#25 symbol parameter test conditions min. typ. max. unit v o output voltage i o = 10 ma to 1.5 a, v i = 3.5 to 8 v t j = - 40 to 125c 2.475 2.5 2.525 v 2.45 2.55 v o load regulation i o = 10 ma to 1.5 a 0.2 1.0 % v o line regulation v i = 3.5 to 13 v 0.06 0.5 % svr supply voltage rejection f = 120 hz, v i = 4.5 1 v, i o = 0.75 a ( note 1 ) 55 70 db v drop dropout voltage i o = 250 ma, t j = - 40 to 125c ( note 2 )0.1 v i o = 0.75 a, t j = - 40 to 125c ( note 2 )0.2 i o = 1.5 a, t j = - 40 to 125c ( note 2 )0.40.7 i q quiescent current i o = 0.75 a, t j = - 40 to 125c 15 40 ma i o = 1.5 a, t j = - 40 to 125c 30 80 v i = 13 v, v inh = gnd, t j = - 40 to 125c 130 180 a i sc short circuit current v i - v o = 5.5 v 2.2 a v il control input logic low off mode, ( note 3 ), t j = - 40 to 125c 0.8 v v ih control input logic high on mode, ( note 3 ), t j = - 40 to 125c 2 v i inh control input current t j = - 40 to 125c, v inh = 13 v 5 10 a en output noise voltage b p = 10 hz to 100 khz, i o = 100 ma 100 v rms t shdn thermal shutdown 150 c
ld29150xx electrical characteristics doc id 9614 rev 18 9/22 i o = 10 ma, t j = 25 c, v i = 5.3 v, v inh = 2 v ( note 3 ), c i = 330 nf, c o = 10 f, unless otherwise specified. note: 1 guaranteed by design. 2 dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with v o + 1 v applied to v i . 3 only for version with inhibit function. table 6. electrical characteristics of ld29150#33 symbol parameter test conditions min. typ. max. unit v o output voltage i o = 10 ma to 1.5 a, v i = 4.3 to 8.8 v t j = - 40 to 125c 3.267 3.3 3.333 v 3.234 3.366 v o load regulation i o = 10 ma to 1.5 a 0.2 1.0 % v o line regulation v i = 4.3 to 13 v 0.06 0.5 % svr supply voltage rejection f = 120 hz, v i = 5.3 1 v, i o = 0.75 a ( note 1 ) 52 67 db v drop dropout voltage i o = 250 ma, t j = - 40 to 125c ( note 2 )0.1 v i o = 0.75 a, t j = - 40 to 125c ( note 2 )0.2 i o = 1.5 a, t j = - 40 to 125c ( note 2 )0.40.7 i q quiescent current i o = 0.75 a, t j = - 40 to 125c 15 40 ma i o = 1.5 a, t j = - 40 to 125c 30 80 v i = 13 v, v inh = gnd, t j = - 40 to 125c 130 180 a i sc short circuit current v i - v o = 5.5 v 2.2 a v il control input logic low off mode, ( note 3 ), t j = - 40 to 125c 0.8 v v ih control input logic high on mode, ( note 3 ), t j = - 40 to 125c 2 v i inh control input current t j = - 40 to 125c, v inh = 13 v 5 10 a en output noise voltage b p = 10 hz to 100 khz, i o = 100 ma 132 v rms t shdn thermal shutdown 150 c
electrical characteristics ld29150xx 10/22 doc id 9614 rev 18 i o = 10 ma, t j = 25 c, v i = 7 v, v inh = 2 v ( note 3 ), c i = 330 nf, c o = 10 f, unless otherwise specified. note: 1 guaranteed by design. 2 dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with v o + 1 v applied to v i . 3 only for version with inhibit function. table 7. electrical characteristics of ld29150#50 symbol parameter test conditions min. typ. max. unit v o output voltage i o = 10 ma to 1.5 a, v i = 6 to 10.5 v t j = - 40 to 125c 4.9555.05 v 4.9 5.1 v o load regulation i o = 10 ma to 1.5 a 0.2 1.0 % v o line regulation v i = 6 to 13 v 0.06 0.5 % svr supply voltage rejection f = 120 hz, v i = 7 1 v, i o = 0.75 a ( note 1 ) 49 64 db v drop dropout voltage i o = 250 ma, t j = - 40 to 125c ( note 2 )0.1 v i o = 0.75 a, t j = - 40 to 125c ( note 2 )0.2 i o = 1.5 a, t j = - 40 to 125c ( note 2 )0.40.7 i q quiescent current i o = 0.75 a, t j = - 40 to 125c 15 40 ma i o = 1.5 a, t j = - 40 to 125c 30 80 v i = 13 v, v inh = gnd, t j = - 40 to 125c 130 180 a i sc short circuit current v i - v o = 5.5 v 2.2 a v il control input logic low off mode, ( note 3 ), t j = - 40 to 125c 0.8 v v ih control input logic high on mode, ( note 3 ), t j = - 40 to 125c 2 v i inh control input current t j = - 40 to 125c, v inh = 13 v 5 10 a en output noise voltage b p = 10 hz to 100 khz, i o = 100 ma 200 v rms t shdn thermal shutdown 150 c
ld29150xx electrical characteristics doc id 9614 rev 18 11/22 i o = 10 ma, t j = 25 c, v i = 3.23 v, v inh = 2 v ( note 3 ), c i = 330 nf, c o = 10 f adjust pin tied to output pin. note: 1 guaranteed by design. 2 reference voltage is measured between output and gnd pin, with adj pin tied to v out . 3 only for version with inhibit function. table 8. electrical characteristics of ld29150#adj symbol parameter test conditions min. typ. max. unit v i minimum operating input voltage i o = 10 ma to 1.5 a, t j = - 40 to 125c 2.5 v v o load regulation i o = 10 ma to 1.5 a 0.2 1.0 % v o line regulation v i = 2.5 v to 13 v, i o = 10 ma 0.06 0.5 % v ref reference voltage i o = 10 ma to 1.5 a, v i = 2.5 to 4.5 v t j = - 40 to 125c ( note 2 ) -1% 1.23 +1% v -2% +2% svr supply voltage rejection f = 120 hz, v i = 3.23 1 v, i o = 0.75 a ( note 1 ) 45 75 db i q quiescent current i o = 0.75 a, t j = - 40 to 125c 15 40 ma i o = 1.5 a, t j = - 40 to 125c 30 80 v i = 13 v, v inh = gnd, t j = - 40 to 125c 130 180 a i adj adjust pin current t j = - 40 to 125c ( note 1 )1a i sc short circuit current v i - v o = 5.5 v 2.2 a v il control input logic low off mode, ( note 3 ),t j = - 40 to 125c 0.8 v v ih control input logic high on mode, ( note 3 ), t j = - 40 to 125c 2 v i inh control input current t j = - 40 to 125c, v inh = 13 v 5 10 a en output noise voltage b p = 10 hz to 100 khz, i o = 100 ma 50 v rms t shdn thermal shutdown 150 c
typical characteristics ld29150xx 12/22 doc id 9614 rev 18 6 typical characteristics figure 5. output voltage vs. temperature figure 6. reference voltage vs. temperature figure 7. dropout voltage vs. temperature figure 8. dropout voltage vs. output current figure 9. quiescent current vs. output current (v i = 13 v) figure 10. quiescent current vs. output current (v i = 4.5 v)
ld29150xx typical characteristics doc id 9614 rev 18 13/22 figure 11. quiescent current vs. supply voltage figure 12. quiescent current vs. temperature (i o = 10 ma) figure 13. quiescent current vs. temperature (i o = 1.5 a) figure 14. short circuit current vs. temperature figure 15. adjust pin current vs. temperature figure 16. supply voltage rejection vs. temperature
typical characteristics ld29150xx 14/22 doc id 9614 rev 18 figure 17. output voltage vs. input voltage figure 18. stability vs. c o figure 19. line transient figure 20. load transient v i =3.5 to 5.5v, i o =10ma, v o =2.5v, c o =10f v i =5v, i o =10ma to 1.5a, v o =2.5v, c o =10f figure 21. start-up time 10 ma figure 22. start-up time 1.5 a c o =10f, i o =10ma, v inh =2v, v o =5v, v i =7v c o =10f, i o =1.5a, v inh =2v, v o =5v, v i =7v
ld29150xx package mechanical data doc id 9614 rev 18 15/22 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.
package mechanical data ld29150xx 16/22 doc id 9614 rev 18 dim. mm. inch. min. typ. max. min. typ. max. a 2.2 2.4 0.0 8 6 0.0 9 4 a1 0. 9 1.1 0.0 3 5 0.04 3 a2 0.0 3 0.2 3 0.001 0.00 9 b 0.64 0. 9 0.025 0.0 3 5 b 4 5.2 5.4 0.204 0.212 c 0.45 0.6 0.017 0.02 3 c2 0.4 8 0.6 0.01 9 0.02 3 d 6 6.2 0.2 3 6 0.244 d1 5.1 0.200 e 6.4 6.6 0.252 0.260 e1 4.7 0.1 8 5 e2.2 8 0.0 9 0 e1 4.4 4.6 0.17 3 0.1 8 1 h 9 . 3 5 10.1 0. 3 6 8 0. 39 7 l 1 0.0 39 (l1) 2. 8 0.110 l2 0. 8 0.0 3 1 l4 0.6 1 0.02 3 0.0 39 r 0.2 0.00 8 v2 0 8 0 8 dpak mechanical data 006 8 772-f
ld29150xx package mechanical data doc id 9614 rev 18 17/22 dim. mm. inch. min. typ. max. min. typ. max. a 2.2 2.4 0.0 8 6 0.0 9 4 a1 0. 9 1.1 0.0 3 5 0.04 3 a2 0.0 3 0.2 3 0.001 0.00 9 b 0.4 0.6 0.015 0.02 3 b2 5.2 5.4 0.204 0.212 c 0.45 0.6 0.017 0.02 3 c2 0.4 8 0.6 0.01 9 0.02 3 d 6 6.2 0.2 3 6 0.244 d1 5.1 0.201 e 6.4 6.6 0.252 0.260 e1 4.7 0.1 8 5 e 1.27 0.050 g4. 9 5.25 0.1 93 0.206 g1 2. 38 2.7 0.0 93 0.106 h 9 . 3 5 10.1 0. 3 6 8 0. 39 7 l2 0. 8 1 0.0 3 1 0.0 39 l4 0.6 1 0.02 3 0.0 39 l5 1 0.0 39 l6 2. 8 0.110 ppak mechanical data 007 8 1 8 0-e
package mechanical data ld29150xx 18/22 doc id 9614 rev 18 dim. mm. inch. min. typ. max. min. typ. max. a4. 3 04. 8 0 0.16 9 0.1 88 a1 2.40 2. 8 0 0.0 9 4 0.110 a2 0.0 3 0.2 3 0.001 0.00 9 b 0. 8 0 1.05 0.0 3 1 0.041 c 0.45 0.60 0.017 0.02 3 c2 1.17 1. 3 7 0.046 0.05 3 d 8 . 9 5 9 . 3 50. 3 52 0. 3 6 8 d2 8 0. 3 15 e 10.00 10.40 0. 393 0.40 9 e1 8 .5 0. 33 4 0.40 9 e 3 .20 3 .60 0.126 0.142 e1 6.60 7.00 0.260 0.275 l1 3 .70 14.50 0.5 39 0.571 l2 1.25 1.40 0.04 9 0.055 l 3 0. 9 0 1.70 0.0 3 5 0.067 l5 1.55 2.40 0.061 0.0 9 4 r 0.40 0.016 v2 0 8 0 8 p 2 pak mechanical data 7226255/b
ld29150xx package mechanical data doc id 9614 rev 18 19/22 dim. mm. inch. min. typ. max. min. typ. max. a 33 0 12. 99 2 c12. 8 1 3 .0 1 3 .2 0.504 0.512 0.51 9 d 20.2 0.7 9 5 n60 2. 3 62 t22.40. 88 2 ao 6. 8 06. 9 0 7.00 0.26 8 0.272 0.2.76 bo 10.40 10.50 10.60 0.40 9 0.41 3 0.417 ko 2.55 2.65 2.75 0.100 0.104 0.105 po 3 . 9 4.0 4.1 0.15 3 0.157 0.161 p7. 98 .0 8 .1 0. 3 11 0. 3 15 0. 3 1 9 tape & reel dpak-ppak mechanical data
package mechanical data ld29150xx 20/22 doc id 9614 rev 18 dim. mm. inch. min. typ. max. min. typ. max. a1 8 0 7.0 8 6 c 12. 8 1 3 .0 1 3 .2 0.504 0.512 0.51 9 d 20.2 0.7 9 5 n60 2. 3 62 t 14.4 0.567 ao 10.50 10.6 10.70 0.41 3 0.417 0.421 bo 15.70 15. 8 0 15. 9 0 0.61 8 0.622 0.626 ko 4. 8 04. 9 0 5.00 0.1 89 0.1 93 0.1 9 7 po 3 . 9 4.0 4.1 0.15 3 0.157 0.161 p 11. 9 12.0 12.1 0.46 8 0.472 0.476 tape & reel d 2 pak-p 2 pak-d 2 pak/a-p 2 pak/a mechanical data
ld29150xx revision history doc id 9614 rev 18 21/22 8 revision history table 9. document revision history date revision changes 17-jun-2004 5 add figures 20 and 21, ppak, to-220 and to-220fp mechanical data updated. 19-jul-2004 6 remove package to-220fp4. 08-nov-2004 7 mistake figure 7. 21-mar-2005 8 add v o and v inh on table 2. 21-oct-2005 9 order codes has been updated. 17-oct-2006 10 add new package p2pak. 13-nov-2006 11 add row t shdn on tables of the electrical characteristics. 11-may-2007 12 order codes updated. 15-feb-2008 13 added: table 1 on page 1 . 28-jul-2009 14 modified: table 1 on page 1 . 22-sep-2010 15 modified: table 1 on page 1 . 27-oct-2010 16 updated: dpak mechanical data on page 16 . 07-may-2012 17 modified: pin connections for ppak, p2pak and dpak figure 3 on page 4 . 06-sep-2012 18 updated: figure for p2pak in cover page.
ld29150xx 22/22 doc id 9614 rev 18 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. unless expressly approved in writing by two authorized st representatives, st products are not recommended, authorized or warranted for use in military, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements 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. ? 2012 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 - sweden - switzerland - united kingdom - united states of america www.st.com

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