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this is information on a product in full production. may 2014 docid14492 rev 3 1/30 st1l05 very low quiescent current bicmos voltage regulator datasheet - production data features ? fixed output voltage: 1.8 v, 2.5 v, 3.3 v and adj ? output voltage tolerance: 2% at 25 c ? output current capability: 1.3 a ? very low quiescent current: max. 650 a ? typ. dropout 0.3 v (@ i o = 1.3 a) ? enable function for b, c and d versions ? power good function for b and d versions ? stable with low esr ceramic capacitors ? thermal shutdown protection with hysteresis ? overcurrent protection ? operating junction temperature range: from 0 to 125 c description the st1l05 is a low drop linear voltage regulator, which supplies up to 1.3 a output current. the output voltage is fixed at 1.8 v, 2.5 v, 3.3 v and it is adjustable. it is available in three different versions with different pinouts. thanks to bicmos technology, the quiescent current is controlled and maintained below 650 a over the entire allowed junction temperature range. the st1l05 is stable with low esr output ceramic capacitors. internal protection circuitry includes thermal protection with hysteresis and overcurrent limiting. the st1l05 is suitable for data storage applications such as hdds, where it can supply 3.3 v required by read channel and memory chips. the regulator is available in the small and thin dfn6 (3x3 mm) and dfn8 (4x4 mm) packages. dfn6 (3x3 mm) dfn8 (4x4 mm) table 1. device summary order codes package output voltage st1l05pu25r dfn6 (3x3 mm) 2.5 v st1l05apu33r dfn6 (3x3 mm) 3.3 v st1l05bpur dfn6 (3x3 mm) adj st1l05cpu33r dfn6 (3x3 mm) 3.3 v ST1L05DPUR dfn8 (4x4 mm) adj www.st.com
contents st1l05 2/30 docid14492 rev 3 contents 1 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 6 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.1 power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.2 enable function (st1l05b, st1l05c and st1l05d only) . . . . . . . . . . . 20 6.3 power good function (st1l05b and st1l05d only) . . . . . . . . . . . . . . . . 20 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8 packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 9 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
docid14492 rev 3 3/30 st1l05 list of tables 30 list of tables table 1. device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 table 2. pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 3. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 4. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 5. esd data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 6. st1l05pu25r electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 7. st1l05apu33r electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 8. st1l05cpu33r electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 table 9. st1l05bpur and ST1L05DPUR electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . 12 table 10. dfn6 (3x3 mm) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 table 11. dfn8 (4x4 mm) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 table 12. dfn6 (3x3 mm) tape and reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 table 13. dfn8 (4x4 mm) reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 table 14. document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
list of figures st1l05 4/30 docid14492 rev 3 list of figures figure 1. st1l05 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 2. st1l05a schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 figure 3. st1l05b and st1l05d schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 figure 4. st1l05c schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 figure 5. pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 figure 6. output voltage vs temperature v o =1.22 v, i o = 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 7. output voltage vs temperature v o =1.22 v, i o = 1.3 a . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 8. output voltage vs temperature v o = 2.5 v, i o = 10 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 9. output voltage vs temperature v o = 2.5 v, i o = 1.3 a . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 10. line regulation vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 11. load regulation vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 12. dropout voltage vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 13. esr required for stability with ceramic capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 14. quiescent current vs temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 15. quiescent current vs output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 16. enable voltage vs temperature v i = 3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 17. enable voltage vs temperature v i = 5.25 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 18. supply voltage rejection vs temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 19. supply voltage rejection vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 20. load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 21. short-circuit removal transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 22. line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 23. enable transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 24. st1l05 application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 25. st1l05a application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 26. st1l05b and st1l05d application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 27. st1l05c application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 28. dfn6 (3x3 mm) drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 29. dfn6 (3x3 mm) recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 figure 30. dfn8 (4x4 mm) drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 figure 31. dfn8 (4x4 mm) recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 figure 32. dfn6 (3x3 mm) tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 figure 33. dfn6 (3x3 mm) reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 figure 34. dfn8 (4x4 mm) carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 figure 35. dfn8 (4x4 mm) reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
docid14492 rev 3 5/30 st1l05 schematic diagram 30 1 schematic diagram figure 1. st1l05 schematic diagram current limit thermal protection gnd opamp v i v o _ sense r 2 r 1 bandgap reference v i v o current limit thermal protection gnd opamp v i v o _ sense r 2 r 1 bandgap reference v i v o figure 2. st1l05a schematic diagram current limit thermal protection gnd opamp r 2 r 1 bandgap reference v i v i v o current limit thermal protection gnd opamp r 2 r 1 bandgap reference v i v i v o
schematic diagram st1l05 6/30 docid14492 rev 3 figure 3. st1l05b and st1l05d schematic diagram figure 4. st1l05c schematic diagram current limit thermal protection gnd opamp power-good signal pg internal enable adj en r p bandgap reference v i v i v i v o current limit thermal protection gnd opamp power-good signal pg internal enable adj en r p bandgap reference v i v i v i v o current limit thermal protection gnd opamp power-good signal pg internal enable adj en r p bandgap reference v i v i v i v o current limit thermal protection gnd opamp power-good signal pg internal enable adj en r p bandgap reference v i v i v i v o
docid14492 rev 3 7/30 st1l05 pin configuration 30 2 pin configuration figure 5. pin connections (top view) st1l05 st1l05a st1l05b st1l05d st1l05c table 2. pin description symbol pin function st1l05 st1l05a st1l05b st1l05c st1l05d v i 6366 8 supply voltage input pin. bypass with a 4.7 f capacitor to gnd v o 4244 6 output voltage pin. bypass with a 4.7 f capacitor to gnd gnd 2 6 2 2 2 ground pin adj - - 5 - 7 adjust pin v o_sense 5--5 -v o sense pg - - 3 - 3 power good pin en - - 1 1 1 enable pin. internal pull-up to v i n.c. 1-3 1-4-5 - 3 4-5 not connected gnd exposed exposed pad has to be connected to gnd
maximum ratings st1l05 8/30 docid14492 rev 3 3 maximum ratings table 3. absolute 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. symbol parameter value unit v i dc supply voltage -0.3 to 7 v v o dc output voltage -0.3 to 7 v pg power good -0.3 to 7 v en enable pin -0.3 to 7 v adj/v out_sense adjust pin or v o sense 4 v p d power dissipation internally limited w i o output current internally limited a t op operating junction temperature range 0 to 150 c t stg storage temperature range (1) 1. storage temperature > 125 c is acceptable only if the regulator is soldered to a pcba. -65 to 150 c t lead lead temperature (soldering) 10 seconds 260 c table 4. thermal data symbol parameter dfn6 dfn8 unit r thjc thermal resistance junction-case 10 4 c/w r thja thermal resistance junction-ambient 55 40 c/w table 5. esd data symbol parameter value unit hbm human body model 2 kv mm machine model 150 v
docid14492 rev 3 9/30 st1l05 electrical characteristics 30 4 electrical characteristics refer to the typical application schematic, v i = 3.3 v to 4.5 v, i o = 5 ma to 1.3 a, c i =c o = 4.7 f, t j = 0 to 125 c, unless otherwise specified. intended typical value is t j = 25 c unless otherwise specified. table 6. st1l05pu25r electrical characteristics symbol parameter test conditions min. typ. max. unit v o output voltage v i = 3.3 v to 5.25 v, t = 25 c 2.45 2.5 2.55 v v o output voltage v i = 3.3 v to 5.25 v 2.4375 2.5 2.5625 v v o line regulation v i = 4.75 v to 5.25 v 15 mv v o load regulation v i = 4.75 v, i o = 10 ma to 1.3 a 15 30 mv i s output current limit v i = 5.5 v 1.3 a i omin minimum output current for regulation 0ma v d dropout voltage i o = 0.8 a 0.2 0.4 v i o = 1 a 0.25 0.45 v i o = 1.3 a 0.3 0.5 v i q quiescent current v i = 5 v, i o = 2 ma to 1.3 a, t = 25 c 350 500 a v i = 5.5 v, i o = 2 ma to 1.3 a 350 650 svr supply voltage rejection (1) v i = 5 0.5 v, i o = 5 ma, f = 120 hz 50 68 db en rms output noise (1) b = 10 hz to 10 khz, v i = 5 v, i o =5ma 0.003 %v o v o / i o load transient (rising) (1)(2) v i = 5 v, any 200 ma step from 100 ma to 1.3 a, t r 1 s 5%v o v o / i o load transient (falling) (1)(2) v i = 5 v, i o = 1.3 a to 10 ma, t f 1 s 2.75 v v o / v i start-up transient (1)(2) v i = 0 v to 5 v, i o = 10 ma to 1.3 a, t r 1 s 2.75 v v o / i o short-circuit removal response (1)(2) v i = 5 v, i o = short to 10 ma 2.75 v t sh thermal shutdown trip point (1) v i = 5 v 165 c 1. guaranteed by design. not tested in production. 2. c i = 10 f, c o = 10 f, all x7r ceramic capacitors.
electrical characteristics st1l05 10/30 docid14492 rev 3 refer to the typical application schematic, v i = 4.5 v to 5.5 v, i o = 5 ma to 1.3 a, c i =c o = 4.7 f, t j = 0 to 125 c, unless otherwise specified. intended typical value is t j = 25 c unless otherwise specified. table 7. st1l05apu33r electrical characteristics symbol parameter test conditions min. typ. max. unit v o output voltage v i = 4.75 v to 5.25 v, t = 25 c 3.234 3.3 3.366 v v o output voltage v i = 4.75 v to 5.25 v 3.2175 3.3 3.3825 v v o line regulation v i = 4.75 v to 5.25 v 15 mv v o load regulation v i = 4.75 v, i o = 10 ma to 1.3 a 15 30 mv i s output current limit v i = 5.5 v 1.3 a i omin minimum output current for regulation 0ma v d dropout voltage i o = 0.8 a 0.2 0.4 v i o = 1 a 0.25 0.45 v i o = 1.3 a 0.3 0.5 v i q quiescent current v i = 5 v, i o = 2 ma to 1.3 a, t = 25 c 350 500 a v i = 5.5 v, i o = 2 ma to 1.3 a 350 650 svr supply voltage rejection (1) v i = 5 0.5 v, i o = 5 ma, f = 120 hz 50 65 db en rms output noise (1) b = 10 hz to 10 khz, v i = 5 v, i o = 5 ma 0.003 %v o v o / i o load transient (rising) (1)(2) v i = 5 v, any 200 ma step from 100 ma to 1.3 a, t r 1 s 5%v o v o / i o load transient (falling) (1)(2) v i = 5 v, i o = 1.3 a to 10 ma, t f 1 s 3.6 v v o / v i start-up transient (1)(2) v i = 0 v to 5 v, i o = 10 ma to 1.3 a, t r 1 s 3.5 v v o / i o short-circuit removal response (1)(2) v i = 5 v, i o = short to 10 ma 3.5 v t sh thermal shutdown trip point (1) v i = 5 v 165 c 1. guaranteed by design. not tested in production. 2. c i = 10f, c o = 10f, all x7r ceramic capacitors.
docid14492 rev 3 11/30 st1l05 electrical characteristics 30 refer to the typical application schematic, v i = 4.5 v to 5.5 v, v en = 2 v, i o = 5 ma to 1.3 a, c i = c o = 4.7 f, t j = 0 to 125 c, unless otherwise specified. intended typical value is t j = 25 c unless otherwise specified. table 8. st1l05cpu33r electrical characteristics symbol parameter test conditions min. typ. max. unit v o output voltage v i = 4.75 v to 5.25 v, t = 25 c 3.234 3.3 3.366 v v o output voltage v i = 4.75 v to 5.25 v 3.2175 3.3 3.3825 v v o line regulation v i = 4.75 v to 5.25 v 15 mv v o load regulation v i = 4.75 v, i o = 10 ma to 1.3 a 15 30 mv i s output current limit v i = 5.5 v 1.3 a i omin minimum output current for regulation 0ma v d dropout voltage i o = 0.8 a 0.2 0.4 v i o = 1 a 0.25 0.45 v i o = 1.3 a 0.3 0.5 v i q quiescent current v i = 5 v, i o = 2 ma to 1.3 a, t = 25 c 350 500 a v i = 5.5 v, i o = 2 ma to 1.3 a 350 650 v en_h enable threshold high v i = 4.5 v to 5.25, i o = 50 ma 2 v v en_l enable threshold low v i = 4.5 v to 5.25, i o = 50 ma 0.8 i en enable pin current v en = v i = 5 v 2 a svr supply voltage rejection (1) v i = 5 0.5 v, i o = 5 ma, f = 120 hz 50 65 db en rms output noise (1) b = 10 hz to 10 khz, v i = 5 v, i o = 5 ma 0.003 %v o v o / i o load transient (rising) (1)(2) v i = 5 v, any 200 ma step from 100 ma to 1.3 a, t r 1 s 5%v o v o / i o load transient (falling) (1)(2) v i = 5 v, i o = 1.3 a to 10 ma, t f 1 s 3.6 v v o / v i start-up transient (1)(2) v i = 0 v to 5 v, i o = 10 ma to 1.3 a, t r 1 s 3.5 v v o / i o short-circuit removal response (1)(2) v i = 5 v, i o = short to 10 ma 3.5 v t sh thermal shutdown trip point (1) v i = 5 v 165 c 1. guaranteed by design. not tested in production. 2. c i =10 f, c o =10 f, all x7r ceramic capacitors.
electrical characteristics st1l05 12/30 docid14492 rev 3 refer to the typical application schematic, v i = 3 v to 5.5 v, v en = 2 v, i o = 5 ma to 1.3 a, c i = c o = 4.7 f, t j = 0 to 125 c, unless otherwise specified. intended typical value is t j = 25 c unless otherwise specified. table 9. st1l05bpur and ST1L05DPUR electrical characteristics symbol parameter test conditions min. typ. max. unit v o output voltage v i = 3 v to 5.25 v, t = 25 c 1.1951.221.245v v o output voltage v i = 3 v to 5.25 v 1.18 1.22 1.256 v v o line regulation v i = 4.75 v to 5.25 v 15 mv v o load regulation v i = 4.75 v, i o = 10 ma to 1.3 a 15 30 mv i adj adjust pin current v i = 3 v to 5.25 v 1 na i s output current limit v i = 5.5 v 1.3 a i omin minimum output current for regulation 1ma v d dropout voltage (1) i o = 0.8 a, v o = 3.3 v 0.2 v i o = 1 a, v o = 3.3 v 0.25 v i o = 1.3 a, v o = 3.3 v 0.3 v i q quiescent current v i = 5 v, i o = 2 ma to 1.3 a, t = 25 c 300 500 a v i = 5.5 v, i o = 2 ma to 1.3 a 350 650 device off (2) 1 v en_h enable threshold high v i = 3 v to 5.25, i o = 50 ma 2 v v en_l enable threshold low v i = 3 v to 5.25, i o = 50 ma 0.8 i en enable pin current v en = v i = 5 v 2 a pg power good output threshold rising edge 0.92 v o v falling edge 0.8 v o power good output voltage low (3) i sink = 6 ma open drain output 0.4 v svr supply voltage rejection (3) v i = 5 0.5 v, i o = 5 ma, f = 120 hz 50 72 db en rms output noise (3) b = 10 hz to 10 khz, v i = 5 v, i o = 5 ma 0.003 %v o v o / i o load transient (rising) (3)(4) v i = 5 v, any 200 ma step from 100 ma to 1.3 a, t r 1 s 5%v o v o / i o load transient (falling) (3)(4) v i = 5 v, i o = 1.3 a to 10 ma, t f 1s 1.38 v v o / v i start-up transient (3)(4) v i = 0 v to 5 v, i o = 10 ma to 1 a, t r 1 s 1.38 v
docid14492 rev 3 13/30 st1l05 electrical characteristics 30 v o / i o short-circuit removal response (3)(4) v i = 5 v, i o = short to 10 ma 1.38 v t sh thermal shutdown trip point (3) v i = 5 v 165 c 1. see minimum start-up voltage, v i = 2.9 v. 2. pg pin floating. 3. guaranteed by design. not tested in production. 4. c i = 10 f, c o = 10 f, all x7r ceramic capacitors. table 9. st1l05bpur and ST1L05DPUR electrical characteristics (continued) symbol parameter test conditions min. typ. max. unit
typical characteristics st1l05 14/30 docid14492 rev 3 5 typical characteristics figure 6. output voltage vs temperature v o = 1.22 v, i o = 10 ma figure 7. output voltage vs temperature v o = 1.22 v, i o = 1.3 a figure 8. output voltage vs temperature v o =2.5 v, i o = 10 ma figure 9. output voltage vs temperature v o = 2.5 v, i o = 1.3 a figure 10. line regulation vs temperature figure 11. load regulation vs temperature 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.26 1.28 1.30 -30 -5 20 45 70 95 120 145 t [c] v o [v] v en = v i = 5 v, i o = 0.01 a, c i = c o = 4.7 f 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.26 1.28 1.30 -30 -5 20 45 70 95 120 145 t [c] v o [v] v en = v i = 5 v, i o = 0.01 a, c i = c o = 4.7 f 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.26 1.28 1.30 -30 -5 20 45 70 95 120 145 t [c] v o [v] v en = v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f 1.10 1.12 1.14 1.16 1.18 1.20 1.22 1.24 1.26 1.28 1.30 -30 -5 20 45 70 95 120 145 t [c] v o [v] v en = v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 -30-5 20457095120145 t [c] v o [v] v i = 5 v, i o = 0.01 a, c i = c o = 4.7 f 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 -30-5 20457095120145 t [c] v o [v] v i = 5 v, i o = 0.01 a, c i = c o = 4.7 f 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 -30-5 20457095120145 t [c] v o [v] v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 -30-5 20457095120145 t [c] v o [v] v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f -20 -15 -10 -5 0 5 10 15 20 -30 -5 20 45 70 95 120 t [c] line [mv] v en = v i = from 4.75 to 5.25 v, i o = 0.005 a, c in = c o = 4.7 f -20 -15 -10 -5 0 5 10 15 20 -30 -5 20 45 70 95 120 t [c] line [mv] v en = v i = from 4.75 to 5.25 v, i o = 0.005 a, c in = c o = 4.7 f 0 10 20 30 40 50 -30 -5 20 45 70 95 120 145 t [c] load [mv] v en = v i = 4.75 v, i o = from 0.01 to 1.3 a, c i = c o = 4.7 f 0 10 20 30 40 50 -30 -5 20 45 70 95 120 145 t [c] load [mv] v en = v i = 4.75 v, i o = from 0.01 to 1.3 a, c i = c o = 4.7 f
docid14492 rev 3 15/30 st1l05 typical characteristics 30 figure 12. dropout voltage vs temperature fi gure 13. esr required for stability with ceramic capacitors figure 14. quiescent current vs temperature figure 15. quiescent current vs output current figure 16. enable voltage vs temperature v i =3v figure 17. enable voltage vs temperature v i =5.25v 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -30-5 20457095120145 t [c] dropout [v] i o = 800 ma i o = 1 a i o = 1.3 a c i = c o = 4.7 f, v o @ 3.3 v 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -30-5 20457095120145 t [c] dropout [v] i o = 800 ma i o = 1 a i o = 1.3 a c i = c o = 4.7 f, v o @ 3.3 v 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0 2 4 6 8 10 12 14 16 18 20 22 c o [f] (nominal value) esr @ 100khz [ohm] c i = 4.7 f, v en = v i = from 3 v to 5.5 v, i o = from 5 ma to 1.3 a stable zone 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0 2 4 6 8 10 12 14 16 18 20 22 c o [f] (nominal value) esr @ 100khz [ohm] c i = 4.7 f, v en = v i = from 3 v to 5.5 v, i o = from 5 ma to 1.3 a stable zone 0 100 200 300 400 500 600 700 -30-520457095120145 t [c] i q [a] v en = v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f 0 100 200 300 400 500 600 700 -30-520457095120145 t [c] i q [a] v en = v i = 5 v, i o = 1.3 a, c i = c o = 4.7 f 0 50 100 150 200 250 300 350 400 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 i o [a] i q [a] v en = v i = 5.5 v, c i = c o = 4.7 f 0 50 100 150 200 250 300 350 400 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 i o [a] i q [a] v en = v i = 5.5 v, c i = c o = 4.7 f 0 0.5 1 1.5 2 2.5 -30 -5 20 45 70 95 120 145 t [c] v en [v] on off v i = 3 v, i o = 50 ma, c i = c o = 4.7 f 0 0.5 1 1.5 2 2.5 -30 -5 20 45 70 95 120 145 t [c] v en [v] on off v i = 3 v, i o = 50 ma, c i = c o = 4.7 f 0 0.5 1 1.5 2 2.5 -30-520457095120145 t [c] v en [v] on off v i = 5.25 v, i o = 50 ma, c i = c o = 4.7 f 0 0.5 1 1.5 2 2.5 -30-520457095120145 t [c] v en [v] on off v i = 5.25 v, i o = 50 ma, c i = c o = 4.7 f
typical characteristics st1l05 16/30 docid14492 rev 3 figure 18. supply voltage rejection vs temperature figure 19. supply voltage rejection vs frequency figure 20. load transient figure 21. short-circuit removal transient i o =10 ma to 1.3 a, c i =c o =10 f, v en =v i =5 v, v o @3.3 v i o =10 ma to short, c i =c o =10 f, v en =v i =5.5 v figure 22. line transient figure 23. enable transient c i =c o =4.7 f, v i =3 to 5.5v, i o =5 ma c o =c i =4.7 f, v en =0 to 2 v, v i =5.5 v, i o =5 ma 50 55 60 65 70 75 80 -30 -5 20 45 70 95 120 145 t[c] svr [db] v en = v i = from 3 to 5.5 v, i o = 5 ma, v o = 1.22 v, c i = c o = 4.7 f, f = 120 hz 50 55 60 65 70 75 80 -30 -5 20 45 70 95 120 145 t[c] svr [db] v en = v i = from 3 to 5.5 v, i o = 5 ma, v o = 1.22 v, c i = c o = 4.7 f, f = 120 hz 20 30 40 50 60 70 80 10 100 1000 10000 100000 1000000 frequency [hz] svr [db] v en = v i = 3 to 5.5 v, i o = 5 ma, v o = 1.22 v, c i = c o = 4.7 f 20 30 40 50 60 70 80 10 100 1000 10000 100000 1000000 frequency [hz] svr [db] v en = v i = 3 to 5.5 v, i o = 5 ma, v o = 1.22 v, c i = c o = 4.7 f v o v i v o v en
docid14492 rev 3 17/30 st1l05 application information 30 6 application information the st1l05 is a low-dropout linear regulator. it provides up to 1.3 a with a low 300 mv dropout. the input voltage range is from 3 v to 5.5 v. the device is available in fixed and adjustable output versions. the regulator is equipped with internal protection circuitry, such as short-circuit current limiting and thermal protection. the regulator is designed to be stable with ceramic capacitors on the input and the output. the expected values of the input and output ceramic capacitors are from 1 f to 22 f with 4.7 f typical. the input capacitor has to be connected within 1 cm from v i terminal. the output capacitor has also to be connected 1 cm far from output pin. there isn?t any upper limit to the value of the input capacitor. figure 24 , figure 25 , figure 26 and figure 27 illustrate the typical application schematics: figure 24. st1l05 application schematic d n gd n g c o c i v v i d d n gn g v v o v v o 5 0 l5 0 l 1 t s1 t s v v i v v o_sense gipg3005141059lm
application information st1l05 18/30 docid14492 rev 3 figure 25. st1l05a application schematic d n gd n g c o c i v v i d d n gn g v v o v v o 5 0 la 5 0 l 1 t s1 t s v v i gipg3004141216lm figure 26. st1l05b and st1l05d application schematic d n g c o c i v v i d n g v v o v v o 5b 0 l 1 t s v v i 5d 0 l 1 t s adj pg en r1 r2 off on gipg3004141246lm
docid14492 rev 3 19/30 st1l05 application information 30 regarding to the adjustable version, the output voltage can be adjusted from 1.22 v up to the input voltage, minus the voltage drop across pmos (dropout voltage), by connecting a resistor divider between adj pin and the output, thus allowing remote voltage sensing. the resistor divider should be selected according to the following equation: equation 1 v o = v adj (1 + r 1 / r 2 ) with v adj = 1.22 v (typ.) resistors should be used with values in the range from 10 k to 100 k . lower values can also be suitable, but they increase current consumption. 6.1 power dissipation an internal thermal feedback loop disables the output voltage if the die temperature rises to approximately 165 c. this feature protects the device from excessive temperature and allows the user to push the limits of the power handling capability of a given circuit board without risk of damaging the device. a good pc board layout should be used to maximize the power dissipation. thermal path goes from the die to the copper lead frame through the package leads and exposed pad to the pc board copper. the pc board copper works as a heatsink. footprint copper pads should be as wider as possible to spread and dissipate the heat to the surrounding ambient. feed-through vias to inner or backside copper layers are also useful to improve the overall thermal performance of the device. power dissipation of the device depends on the input voltage, output voltage and output current, and is given by: equation 2 p d = (v i -v o ) i o figure 27. st1l05c application schematic gnd c o c i v i gnd off on en v o v o v o_sense st1l05c v i gnd c o c i v i gnd off on en v o v o v o_sense st1l05c v i
application information st1l05 20/30 docid14492 rev 3 the junction temperature of the device is: t j_max = t a + r thja x p d where: t j_max is the maximum junction of the die, 125 c t a is the ambient temperature r thja is the thermal resistance junction-to-ambient 6.2 enable function (st1l05b , st1l05c and st1l05d only) the st1l05 features the enable function. when en voltage is higher than 2 v the device is on, and if it is lower than 0.8 v the device is off. in shutdown mode, consumption is lower than 1 a. en pin has an internal pull-up, so it can be left floating if it is not used. 6.3 power good function (st1l05b and st1l05d only) most applications require a flag showing that the output voltage is in the correct range. power good threshold depends on the adjust voltage. when the adjust is higher than 0.92*v adj , power good (pg) pin goes to high impedance. if the adjust is below 0.92*v adj pg pin goes to low impedance. if the device works correctly, power good pin is at high impedance. if the output voltage is fixed using an external or internal resistor divider, power good threshold is 0.92*v o . to use power good function, an external pull-up resistor is required, and it has to be connected between pg pin and v i or v o . pg pin typical current capability is up to 6 ma. a pull-up resistor in the range of 100 k to 1 m is recommended. if power good function is not used, pg pin has to remain floating.
docid14492 rev 3 21/30 st1l05 package mechanical data 30 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 28. dfn6 (3x3 mm) drawings
package mechanical data st1l05 22/30 docid14492 rev 3 figure 29. dfn6 (3x3 mm) recommended footprint table 10. dfn6 (3x3 mm) mechanical data dim. mm min. typ. max. a0.80 1 a1 0 0.02 0.05 a3 0.20 b 0.23 0.45 d 2.90 3 3.10 d2 2.23 2.50 e 2.90 3 3.10 e2 1.50 1.75 0.95 l 0.30 0.40 0.50
docid14492 rev 3 23/30 st1l05 package mechanical data 30 figure 30. dfn8 (4x4 mm) drawings
package mechanical data st1l05 24/30 docid14492 rev 3 figure 31. dfn8 (4x4 mm) recommended footprint table 11.dfn8 (4x4 mm) mechanical data dim. mm min. typ. max. a 0.80 0.90 1 a1 0 0.02 0.05 a3 0,20 b 0.23 0.30 0.38 d 3.90 4 4.10 d2 2.82 3 3.23 e 3.90 4 4.10 e2 2.05 2.20 2.30 e0.80 l 0.40 0.50 0.60
docid14492 rev 3 25/30 st1l05 packaging mechanical data 30 8 packaging mechanical data figure 32. dfn6 (3x3 mm) tape b1
packaging mechanical data st1l05 26/30 docid14492 rev 3 figure 33. dfn6 (3x3 mm) reel table 12. dfn6 (3x3 mm) tape and reel mechanical data dim. mm min. typ. max. a0 3.20 3.30 3.40 b0 3.20 3.30 3.40 k0 1 1.10 1.20 b1
docid14492 rev 3 27/30 st1l05 packaging mechanical data 30 figure 34. dfn8 (4x4 mm) carrier tape 7279936
packaging mechanical data st1l05 28/30 docid14492 rev 3 figure 35. dfn8 (4x4 mm) reel table 13. dfn8 (4x4 mm) reel mechanical data dim. mm min. typ. max. a 330 c 12.8 13.0 13.2 d20.2 n60 t 22.4
docid14492 rev 3 29/30 st1l05 revision history 30 9 revision history table 14. document revision history date revision changes 29-feb-2008 1 first release. 07-jul-2009 2 added: package dfn8 (4 x 4 mm). 05-may-2014 3 part numbers: st1l05a, st1l05b, st1l05c, st1l05d have been included in the st1l05 for product rationalization. changed title of figure 6 , figure 7 , figure 8 , figure 9 , figure 16 and figure 17 . updated package mechanical data. added section 8 .
st1l05 30/30 docid14492 rev 3 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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