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april 2014 docid025316 rev 2 1 / 26 this is information on a product in full production. www.st.com ld39020 200 ma very low quiescent current linear regulator ic datasheet - production data features ? input voltage from 1.5 to 5.5 v ? ultra low dropout voltage (200 mv typ. at 200 ma load) ? very low quiescent current (20 a typ at no load, 0.03 a typ in off mode) ? output voltage toler ance: 0.5 % (a version) or 2.0 % @ 25 c (standard version) ? 200 ma guaranteed output current ? high psrr (80 db@1 khz, 50 db@100 khz) ? wide range of output voltages available on request: from 0.8 v up to 5.0 v in 50 mv step ? logic - controlled electronic shut down ? internal soft - start ? optional output voltage discharge feature ? compatible with ceramic capacitor c out = 0.47 f ? internal constant current and thermal protections ? available in dfn 1x1 - 4l ? operating temperature range: - 40 c to 125 c applications ? mobile phones ? personal digital assistants (pdas) ? digital still cameras (dsc) ? cordless phones and similar battery - powered systems ? portable media players description the ld39020 high accuracy voltage regulator provides 200 ma of maximum current from an input voltage ranging from 1.5 v to 5.5 v, with a typical dropout voltage of 200 mv. it is a vailable in dfn 1x1 - 4l package, allowing the maximum space saving. the device is stabilized with a ceramic capacitor on the output. the ultra low drop voltage, low quiescent current and low noise features, together with the internal soft - start circuit, mak e the ld39020 suitable for low power battery - operated applications. an enable logic control function puts the ld39020 in shutdown mode allowing a total current consumption lower than 0.1 a. constant current and thermal protection are provided.
contents ld39020 2 / 26 docid025316 rev 2 contents 1 diagram ................................ ................................ ............................ 5 2 pin configuration ................................ ................................ ............. 6 3 typical application ................................ ................................ .......... 7 4 maximum ratings ................................ ................................ ............. 8 5 electrical characteristics ................................ ................................ 9 6 application information ................................ ................................ 12 6.1 soft start function ................................ ................................ ............ 12 6.2 output discharge function ................................ ............................... 12 6.3 input and output capacitors ................................ ............................. 12 7 typical characteristics ................................ ................................ .. 13 8 package mechanical data ................................ ............................. 18 8. 1 dfn4 1x1 package info ................................ ................................ ... 19 9 order codes ................................ ................................ ................... 22 10 revision history ................................ ................................ ............ 25
ld39020 list of tables docid025316 rev 2 3 / 26 list of tables table 1: pin description ................................ ................................ ................................ .............................. 6 table 2: absolute maximum ratings ................................ ................................ ................................ ........... 8 table 3: thermal data ................................ ................................ ................................ ................................ . 8 table 4: esd performance ................................ ................................ ................................ ......................... 8 table 5: electrical characteristics for ld39020t, ld39020dt ................................ ................................ ... 9 table 6: electrical characteristics for ld39020at, ld39020adt ................................ ............................ 10 table 7: dfn 1x1 - 4l mechanical data ................................ ................................ ................................ ..... 20 table 8: order codes ................................ ................................ ................................ ................................ 22 table 9: document revision history ................................ ................................ ................................ .......... 25
list of figures ld39020 4 / 26 docid025316 rev 2 list of figures figure 1: block diagram ................................ ................................ ................................ .............................. 5 figure 2: pin connection (top view) ................................ ................................ ................................ ............ 6 figure 3: typical application circuits ................................ ................................ ................................ ........... 7 figure 4: output voltage vs. temperature (i out = 1 ma) ................................ ................................ ........... 13 figure 5: output voltage vs. temperature (i out = 200 ma) ................................ ................................ ....... 13 figure 6: line regulation vs. temperature ................................ ................................ ................................ . 13 figure 7: load regulation vs. temperature ................................ ................................ ................................ 13 figure 8: quiescent current vs. temperature (i out = 0 ma) ................................ ................................ ...... 14 figure 9: quiescent current vs. temperature (i out = 200 ma) ................................ ................................ .. 14 figure 10: shutdown current vs. temperature ................................ ................................ .......................... 14 figure 11: quiescent current vs. load current ................................ ................................ .......................... 14 figure 12: quiescent current vs. input voltage ................................ ................................ ......................... 14 figure 13: dropout voltage vs temperature ................................ ................................ .............................. 14 figure 14: supply voltage rejection vs. frequency ................................ ................................ .................... 15 figure 15: supply voltage rejection vs. input voltage ................................ ................................ ............... 15 figure 16: output noise spectral density ................................ ................................ ................................ .. 15 figure 17: stability area vs (c out , esr) ................................ ................................ ................................ ... 15 figure 18: enable startup (v out = 1 v) ................................ ................................ ................................ ..... 15 figure 19: enable startup (v out = 5 v) ................................ ................................ ................................ ..... 15 figure 20: turn - on time (v out = 1 v) ................................ ................................ ................................ ........ 16 figure 21: turn - off time (v out = 1 v) ................................ ................................ ................................ ........ 16 figure 22: turn - on time (v out = 5 v) ................................ ................................ ................................ ........ 16 figure 23: turn - off time (v out = 5 v) ................................ ................................ ................................ ........ 16 figure 24: line transient (v out = 1 v) ................................ ................................ ................................ ....... 16 figure 25: line transient (v out = 5 v) ................................ ................................ ................................ ....... 16 figure 26: load transient (v out = 1 v) ................................ ................................ ................................ ...... 17 figure 27: load transient (v out = 5 v) ................................ ................................ ................................ ...... 17 figure 28: dfn 1x1 - 4l drawing ................................ ................................ ................................ ................ 19 figure 29: dfn 1x1 - 4l footprint ................................ ................................ ................................ ............... 21
ld39020 diagram docid025316 rev 2 5 / 26 1 diagram figure 1 : block diagram the output discharge mosfet is optional.
pin configuration ld39020 6 / 26 docid025316 rev 2 2 pin configuration figure 2 : pin connection (top view) table 1: pin description pin n symbol function 1 out output voltage 2 gnd common ground 3 en enable pin logic input: low = shutdown, high = active 4 in input voltage thermal pad gnd connect to gnd on the pcb am13853v1 1 2 4 3 thermal pad
ld39020 typical application docid025316 rev 2 7 / 26 3 typical application figure 3 : typical application circuits
maximum ratings ld39020 8 / 26 docid025316 rev 2 4 maximum ratings table 2: absolute maximum ratings symbol parameter value unit v in input voltage - 0.3 to 7 v v out output voltage - 0.3 to v in + 0.3 v v en enable input voltage - 0.3 to 7 v i out output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range - 40 to 150 c t op operating junction temperature range - 40 to 125 c 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 3: thermal data symbol parameter value unit r thja thermal resistance junction - ambient 250 c/w table 4: esd performance symbol parameter test conditions value unit esd esd protection voltage hbm 4 kv mm 400 v cdm 500 v
ld39020 electrical characteristics docid025316 rev 2 9 / 26 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 5: electrical characteristics for ld39020t, ld39020dt symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.5 5.5 v v out v out accuracy i out = 1 ma, t j = 25 c - 2 2 % i out = 1 ma, - 40 c electrical characteristics ld39020 10 / 26 docid025316 rev 2 symbol parameter test conditions min. typ. max. unit hysteresis 20 c out output capacitor capacitance (see figure 17: "stability area vs (cout, esr)" ) 0.47 22 f notes: (1) not applicable for vout(nom) > 4.5 v (2) turn - on time is time measured between the enable input just exceeding ven high value and the output voltage just reaching 95 % of its nominal value 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 6: electrical characteristics for ld39020at, ld39020adt symbol parameter test conditions min. typ. max. unit v in operating input voltage 1.5 5.5 v v out v out accuracy i out = 1 ma, t j = 25 c - 0.5 0.5 % i out = 1 ma, - 40 c ld39020 electrical characteristics docid025316 rev 2 11 / 26 symbol parameter test conditions min. typ. max. unit v en enable input logic low v in = 1.5 v to 5.5 v - 40 c 4.5 v (2) turn - on time is time measured between the enable input just exceeding ven high value and the output voltage just reaching 95 % of its nominal value
application information ld39020 12 / 26 docid025316 rev 2 6 application information 6.1 soft start function the ld39020 has an internal soft start circuit. by incre asing the startup time up to 100s, without the need of any external soft start capacitor, this feature is able to keep the regulator inrush current at startup under control. 6.2 output discharge function the ld39020 integrates a mosfet connected between vout and gnd. this transistor is activated when the en pin goes to low logic level and has the function to quickly discharge the output capacitor when the device is d isabled by the user. the device is available with or without auto - discharge feature. see table 8: "order codes" for more details. 6.3 input and output capacitors the ld39020 requires external capacitors to assure the regulator control loop stability. any good quality ceramic capacitor can be used but, the x5r and the x7r are suggested since they guarantee a very stable combination of c apacitance and esr overtemperature. locating the input/output capacitors as closer as possible to the relative pins is recommended. the ld39020 requires an input capacitor with a minimum value of 1 f. this capacitor must be located as closer as possible to the input pin of the device and returned to a clean analog ground. the control loop of the ld39020 is designed to work with an output ceramic capacitor. this capacitor must meet the requirements of minimum capacitance and equivalent series resistance (esr), as shown in fig17. to assure stability, the output capacitor must maintain its esr and capacitance in the stable region, over the full operating temperature range. the ld39020 shows stability with a minimum effective output capacitance of 220 nf. however, to keep stability in all operating conditions (temperature, input voltage and load variations), a minimum output capacitor of 0.47 f is recommended. the suggested combination of 1 f input and output capacitors offers a good compromise among the stability of the regulator, optimum transient response and total pcb area occupation.
ld39020 typical characteristics docid025316 rev 2 13 / 26 7 typical characteristics (c in = c out = 1 f, v en to v in, t j = 25c unless other wise specified) figure 4 : output voltage vs. temperature (iout = 1 ma) figure 5 : output voltage vs. temperature (iout = 200 ma) figure 6 : line regulation vs. temperature figure 7 : load regulation vs. temperature
typical characteristics ld39020 14 / 26 docid025316 rev 2 figure 8 : quiescent current vs. temperature (iout = 0 ma) figure 9 : quiescent current vs. temperature (iout = 200 ma) figure 10 : shutdown current vs. temperature figure 11 : quiescent current vs. load current figure 12 : quiescent current vs. input voltage figure 13 : dropout voltage vs temperature am13861v1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 - 40 - 25 0 25 55 85 125 q u i esce n t c u rr e n t [ a ] t e m pe r a t u r e [ c ] v i n = 4.3 v , v e n = g n d am13864v1 0 25 50 75 100 125 150 175 200 225 250 275 - 40 - 25 0 25 55 85 125 d ropou t v o l t a g e [ m v ] t e mp e r a t ur e [ c ] i o ut = 30 m a i o ut = 50 m a i o ut = 10 0 ma i o ut = 20 0 ma
ld39020 typical characteristics docid025316 rev 2 15 / 26 figure 14 : supply voltage rejection vs. frequency figure 15 : supply voltage rejection vs. input voltage figure 16 : output noise spectral density figure 17 : stability area vs (cout, esr) figure 18 : enable startup (vout = 1 v) figure 19 : enable startup (vout = 5 v) am13870v1 v i n = 5.5 v , v e n = 0v t o 2 v , i o u t = 0.2 a , v o u t = 5 v , t r = 5 s v en v o u t i o u t am13865v1 v in = 2 v + / - 200 m v , v o ut = 1 v , c o ut = 1f 0 10 20 30 40 50 60 70 80 90 100 100 1000 10000 100000 1000000 svr [ d b ] f r e quenc y [ h z] i o ut = 1ma i o ut = 30 m a i o ut = 10 0 ma i o ut = 20 0 ma am13869v1 v i n = 2 v , v e n = 0v t o v i n , i o u t = 0.2 a , v o u t = 1 v , t r = 5 s v en v o u t i o u t
typical characteristics ld39020 16 / 26 docid025316 rev 2 figure 20 : turn - on time (vout = 1 v) figure 21 : turn - off time (vout = 1 v) figure 22 : turn - on time (vout = 5 v) figure 23 : turn - off time (vout = 5 v) figure 24 : line transient (vout = 1 v) figure 25 : line transient (vout = 5 v) am13872v1 v i n = v e n = f rom 5.5 v t o 0 v , i o u t = 0.2 a , v o u t = 1 v , t f = 5 s v i n v o u t i o u t am13875v1 v i n = v e n =f rom 2v t o 3v , i o u t = 10 ma , v o u t = 1 v , t r = t f = 5 s v i n v o u t am13874v1 v i n = v e n = f rom 5.5 v t o 0 v , i o u t = 0.2 a , v o u t = 5 v , t f = 5 s v i n v o u t i o u t am13871v1 v i n = v e n = f rom 0v t o 5.5 v , i o u t = 0.2 a , v o u t = 1 v , t r = 5 s v i n v o u t i o u t am13876v1 v i n = v e n =f rom 5.1v t o 5.5v , i o u t = 10 ma , v o u t = 5 v , t r = t f = 5 s v i n v o u t am13873v1 v i n = v e n = f rom 0v t o 5.5 v , i o u t = 0.2 a , v o u t = 5 v , t r = 5 s v i n v o u t i o u t
ld39020 typical characteristics docid025316 rev 2 17 / 26 figure 26 : load transient (vout = 1 v) figure 27 : load transient (vout = 5 v) am13877v1 v i n = v e n = 2 v , i o u t =f rom 0 t o 0.2 a , v o u t = 1 v , t r = t f = 5 s v ou t i ou t am13878v1 v i n = v e n = 5.5 v , i o u t =f rom 0 t o 0.2 a , v o u t = 5 v , t r = t f = 5 s v ou t i ou t
package mechanical data ld39020 18 / 26 docid025316 rev 2 8 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. ecop ack? specifications, grade definitions and product status are available at: www.st.com. ecopack? is an st trademark.
ld39020 package mechanical data docid025316 rev 2 19 / 26 8.2 dfn4 1x1 package info figure 28 : dfn 1x1 - 4l drawing
package mechanical data ld39020 20 / 26 docid025316 rev 2 table 7: dfn 1x1 - 4l mechanical data dim. mm. min. typ. max. a 0.34 0.37 0.40 a1 0 0.02 0.05 a3 0.10 b 0.17 0.22 0.27 d 0.95 1.00 1.05 d2 0.43 0.48 0.53 e 0.95 1.00 1.05 e2 0.43 0.48 0.53 e 0.65 l 0.20 0.25 0.30 k 0.15
ld39020 packa ge mechanical data docid025316 rev 2 21 / 26 figure 29 : dfn 1x1 - 4l footprint
order codes ld39020 22 / 26 docid025316 rev 2 9 order codes table 8: order codes order code output voltage (v) auto - discharge tolerance (%) marking ld39020adtpu08r (1) 0.8 yes 0.5 a1 ld39020dtpu08r 2 08 ld39020atpu08r (1) no 0.5 b1 ld39020tpu08r (1) 2 c1 ld39020adtpu095r (1) 0.95 yes 0.5 a2 ld39020dtpu095r 2 95 ld39020atpu095r (1) no 0.5 b2 ld39020tpu095r (1) 2 c2 ld39020adtpu10r (1) 1 yes 0.5 a3 ld39020dtpu10r 2 10 ld39020atpu10r (1) no 0.5 b3 ld39020tpu10r (1) 2 c3 ld39020adtpu11r (1) 1.1 yes 0.5 a4 ld39020dtpu11r 2 11 ld39020atpu11r (1) no 0.5 b4 ld39020tpu11r (1) 2 c4 ld39020adtpu12r (1) 1.2 yes 0.5 a5 ld39020dtpu12r 2 12 ld39020atpu12r (1) no 0.5 b5 ld39020tpu12r (1) 2 c5 ld39020adtpu13r 1.3 yes 0.5 ap ld39020dtpu13r 2 13 ld39020atpu13r (1) no 0.5 bp ld39020tpu13r (1) 2 cp ld39020adtpu15r (1) 1.5 yes 0.5 a6 ld39020dtpu15r 2 15 ld39020atpu15r (1) no 0.5 b6 ld39020tpu15r (1) 2 c6 LD39020ADTPU18R (1) 1.8 yes 0.5 a7 ld39020dtpu18r 2 18 ld39020atpu18r (1) no 0.5 b7 ld39020tpu18r (1) 2 c7
ld39020 order codes docid025316 rev 2 23 / 26 order code output voltage (v) auto - discharge tolerance (%) marking ld39020adtpu20r (1) 2 yes 0.5 a8 ld39020dtpu20r 2 20 ld39020atpu20r (1) no 0.5 b8 ld39020tpu20r (1) 2 c8 ld39020adtpu21r (1) 2.1 yes 0.5 a9 ld39020dtpu21r 2 21 ld39020atpu21r (1) no 0.5 b9 ld39020tpu21r (1) 2 c9 ld39020adtpu25r (1) 2.5 yes 0.5 aa ld39020dtpu25r 2 25 ld39020atpu25r (1) no 0.5 ba ld39020tpu25r (1) 2 ca ld39020adtpu27r (1) 2.7 yes 0.5 ab ld39020dtpu27r 2 27 ld39020atpu27r (1) no 0.5 bb ld39020tpu27r (1) 2 cb ld39020adtpu28r (1) 2.8 yes 0.5 ac ld39020dtpu28r 2 28 ld39020atpu28r (1) no 0.5 bc ld39020tpu28r (1) 2 cc ld39020adtpu285r (1) 2.85 yes 0.5 ad ld39020dtpu285r 2 85 ld39020atpu285r (1) no 0.5 bd ld39020tpu285r (1) 2 cd ld39020adtpu29r (1) 2.9 yes 0.5 ae ld39020dtpu29r 2 29 ld39020atpu29r (1) no 0.5 be ld39020tpu29r (1) 2 ce ld39020adtpu30r (1) 3 yes 0.5 af ld39020dtpu30r 2 30 ld39020atpu30r (1) no 0.5 bf ld39020tpu30r (1) 2 cf ld39020adtpu31r (1) 3.1 yes 0.5 ag ld39020dtpu31r 2 31 ld39020atpu31r (1) no 0.5 bg ld39020tpu31r (1) 2 cg
order codes ld39020 24 / 26 docid025316 rev 2 order code output voltage (v) auto - discharge tolerance (%) marking ld39020adtpu32r (1) 3.2 yes 0.5 ah ld39020dtpu32r (1) 2 32 ld39020atpu32r (1) no 0.5 bh ld39020tpu32r (1) 2 ch ld39020adtpu33r (1) 3.3 yes 0.5 aj ld39020dtpu33r 2 33 ld39020atpu33r (1) no 0.5 bj ld39020tpu33r (1) 2 cj ld39020adtpu36r (1) 3.6 yes 0.5 ak ld39020dtpu36r 2 36 ld39020atpu36r (1) no 0.5 bk ld39020tpu36r (1) 2 ck ld39020adtpu40r (1) 4 yes 0.5 al ld39020dtpu40r 2 40 ld39020atpu40r (1) no 0.5 bl ld39020tpu40r (1) 2 cl ld39020adtpu47r (1) 4.7 yes 0.5 am ld39020dtpu47r 2 47 ld39020atpu47r (1) no 0.5 bm ld39020tpu47r (1) 2 cm ld39020adtpu50r (1) 5 yes 0.5 an ld39020dtpu50r 2 50 ld39020atpu50r (1) no 0.5 bn ld39020tpu50r (1) 2 cn notes: (1) available on request.
ld39020 revision history docid025316 rev 2 25 / 26 10 revision history table 9: document revision history date revision changes 04 - dec - 2013 1 initial release. 02 - apr - 2014 2 updated table 8: "order codes" .
ld39020 26 / 26 docid025316 rev 2 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 a nd services described herein at any time, without notice. all st products are sold pursuant to sts 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 assumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no lic ense, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. if an y 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 whatsoeve r of such third party products or services or any intellectual property contained therein. unless ot herwise set forth in sts 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 purc haser shall use products at purchasers 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 produ ct 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 statements and/or technical features set for th 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 whatso ever, any liability of st. st and the st logo are trademarks or registered 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 st microelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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