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june 2015 docid025316 rev 3 1 / 30 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 featu res ? 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 t oler 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 sh utdown ? 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 and sot23 - 5l ? operating temperature range: - 40 c to 125 c app lications ? 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 avail able in dfn 1x1 - 4l and sot23 - 5l packages, 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 ci rcuit, make 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. dfn1x1 - 4l sot23 - 5l
con tents ld39020 2 / 30 docid025316 rev 3 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 information ................................ ................................ ..... 18 8.1 dfn4 1x1 - 4l package information ................................ .................. 19 8.2 sot23 - 5l package information ................................ ...................... 22 8 .3 sot23 - 5l packing information ................................ ........................ 24 9 order code ................................ ................................ ..................... 25 10 revision history ................................ ................................ ............ 29
ld39020 list of tables docid025316 rev 3 3 / 30 list of tables table 1: pin description ................................ ................................ ................................ .............................. 6 table 2: absolute maximum ratings ................................ ................................ ................................ ........... 8 t able 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: sot23 - 5l mechanical data ................................ ................................ ................................ ........ 22 table 9: sot23 - 5l tape and reel mechanical data ................................ ................................ .................. 24 table 10: dfn1x1 - 4l order code ................................ ................................ ................................ ............. 25 table 11: sot23 - 5l order code ................................ ................................ ................................ .............. 28 table 12: document revision history ................................ ................................ ................................ ........ 29
list of figures ld39020 4 / 30 docid025316 rev 3 l ist 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 vol tage 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 fig ure 14: supply voltage rejection vs. frequency ................................ ................................ .................... 15 figure 15: supply voltage rejection vs. input voltage ................................ ................................ ............... 15 figure 16: output noi se 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 f igure 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 package o utline ................................ ................................ ................................ ... 19 figure 29: dfn 1x1 - 4l recommended footprint ................................ ................................ ....................... 21 figure 30: sot23 - 5l package outline ................................ ................................ ................................ ...... 22 figure 31: sot23 - 5l recommended footprint ................................ ................................ .......................... 23 figure 32: sot23 - 5l tape and reel outline ................................ ................................ .............................. 24
ld39020 diagram docid025316 rev 3 5 / 30 1 diagram figure 1 : block diagram the output discharge mosfet is optional.
pin configuration ld39020 6 / 30 docid025316 rev 3 2 pin configuration figure 2 : pin connection (top view) table 1: pin description pin n dfn1x1 - 4l pin n sot23 - 5l symbol function 1 5 out output voltage 2 2 gnd common ground 3 3 en enable pin logic input: l ow = shutdown, high = active 4 1 in input vol tage t hermal pad - gnd connect to gnd on the pcb - 4 nc not connected
ld39020 typical application docid025316 rev 3 7 / 30 3 typical application figure 3 : typical application circuits
maximum ratings ld39020 8 / 30 docid025316 rev 3 4 maximum r atings 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, dfn1x1 - 4l 250 c/w r thjc ther mal resistance junction - case, sot23 - 5l 81 c/w r thja thermal resistance junction - ambient, sot23 - 5l 255 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 3 9 / 30 5 electrical c haracteristics 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 / 30 docid025316 rev 3 symbol parameter test conditions min. typ. max. unit c out output capacitor capacitance (see figure 17: "stab ility 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 ou t 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 3 11 / 30 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 / 30 docid025316 rev 3 6 applic ation information 6.1 soft start function the ld39020 has an internal soft start circuit. by increasing 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 wh en the device is disabled by the user. the device is available with or without auto - discharge feature. see table 10: "dfn1x1 - 4l 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 capacitance 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 o utput 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 3 13 / 30 7 typical characteristics (c in = c out = 1 f, v en to v in, t j = 25c unless otherwise specified) figure 4 : output voltage vs. temperature (i out = 1 ma) figure 5 : output voltage vs. temperature (i out = 200 ma) figure 6 : line regulation vs. temperature figure 7 : load regulation vs. temperature load regulation
typical characteristics ld39020 14 / 30 docid025316 rev 3 figure 8 : quiescent current vs. temperature (i out = 0 ma) figure 9 : quiescent current vs. temperature (i out = 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 character istics docid025316 rev 3 15 / 30 figure 14 : supply voltage rejection vs. frequ ency figure 15 : supply voltage rejection vs. input voltage figure 16 : output noise spectral density figure 17 : stability area vs . (c out , esr) figure 18 : enable startup (v out = 1 v) figure 19 : enable startup (v out = 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 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 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
typical characteristics ld39020 16 / 30 docid025316 rev 3 figure 20 : turn - on time (v out = 1 v) figure 21 : turn - off time (v out = 1 v) figure 22 : turn - on time (v out = 5 v) figure 23 : turn - off time (v out = 5 v) figure 24 : line transient (v out = 1 v) figure 25 : line transient (v out = 5 v) 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 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 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 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 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
ld39020 typical characteristics docid025316 rev 3 17 / 30 figure 26 : load transient (v out = 1 v) figure 27 : load transient (v out = 5 v) 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 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
package information ld39020 18 / 30 docid025316 rev 3 8 package information in order to meet en vironmental requirements, st offers these devices in different grades of ecopack? packages, depending on their level of environmental compliance. ecopack? specifications, grade definitions and p roduct status are available at: www.st.com . ecopack? is an st trademark.
ld39020 package information docid025316 rev 3 19 / 30 8.1 dfn4 1x1 - 4l package info rmation figure 28 : dfn 1x1 - 4l package outline
package information ld39020 20 / 30 docid025316 rev 3 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 package information docid025316 rev 3 21 / 30 figure 29 : dfn 1x1 - 4l recommended footprint
package information ld39020 22 / 30 docid025316 rev 3 8.2 sot23 - 5l package information figure 30 : sot23 - 5l package outline table 8: 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 0 .09 0.20 d 2.95 e 1.60 e 0.95 h 2.80 l 0.30 0.60 0 8
ld39020 package information docid025316 rev 3 23 / 30 figure 31 : sot23 - 5l recommended footprint dimensions are in mm.
package informatio n ld39020 24 / 30 docid025316 rev 3 8.3 sot23 - 5l packing information figure 32 : sot23 - 5l tape and reel outline table 9: sot23 - 5l tape and reel mechanical data dim. mm min. typ. max. a 180 c 12.8 13.0 13.2 d 20.2 n 60 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 bo ko ao po p d a n t
ld39020 order code docid025316 rev 3 25 / 30 9 order code table 10: dfn1x1 - 4l order code 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 ld39020adtpu1 8r (1) 1.8 yes 0.5 a7 ld39020dtpu18r 2 18 ld39020atpu18r (1) no 0.5 b7 ld39020tpu18r (1) 2 c7
order code ld39020 26 / 30 docid025316 rev 3 order code output voltage (v) auto - discharge tolerance (%) marking ld39020adtpu185r (1) 1.85 yes 0.5 ar ld39020dtpu185r (1) 2 85 ld39020atpu185r (1) no 0.5 br ld39020tpu185r (1) 2 cr 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 ld39 020atpu21r (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 ld39 020adtpu285r (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
ld39020 order code docid025316 rev 3 27 / 30 order code output voltage (v) auto - discharge tolerance (%) marking ld39020adtpu31r (1) 3.1 yes 0.5 ag ld39020dtpu31r 2 31 ld39020atpu31r (1) no 0.5 bg ld39020tpu31r (1) 2 cg 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 ld39020dtpu5 0r 2 50 ld39020atpu50r (1) no 0.5 bn ld39020tpu50r (1) 2 cn notes: (1) available on request.
order code ld39020 28 / 30 docid025316 rev 3 table 11: sot23 - 5l order code order code output voltage (v) auto - discharge tolerance (%) marking ld39020adm30r (1) 3.0 yes 0.5 ad30 notes: (1) available on request.
ld39020 revision history docid025316 rev 3 29 / 30 10 revision history table 12: document revision history date revision changes 04 - dec - 2013 1 initial release. 02 - apr - 2014 2 updated table 10: "dfn1x1 - 4l order codes" . 1 5 - jun - 2015 3 added sot23 - 5l package. modified features and description in cover page. updated section 7: "pin configuration" and table 3: "thermal data" . added section 13.2: "sot23 - 5l package information" and section 13.3: "sot23 - 5l packing information" . minor text changes.
ld39020 30 / 30 docid025316 rev 3 important notice C please read carefully stmicroelectronics nv and its subsidiaries (st) reserve the right to make changes, corrections, enhancements, modifications, and improvements to st products and/or to this document at any time without notice. purchasers should obtain the latest relevant information on st products before placing orders. st products are sold pursuant to st s terms and conditions of sale in place at the time of order acknowledgement. purchasers are solely responsible for the choice, selection, and use of st products and st assumes no liability for applicati on assistance or the design of purchasers produc ts. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with provisions different from the information set forth herein shall void any warranty granted by st f or such product. st and the s t logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2015 stmicroelec tronics C all rights reserved

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