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1/12 january 2005 output current up to 200ma low dropout voltage (500mv max at i out =200ma) very low quiescent current: 0.1 a in off mode and max 250 a in on mode at i out =0ma low output noise: typ 30 v at i out =60ma and 10hz lk112s series 2/12 table 1: order codes (*) available on request part number output voltage v out min v out max test voltage lk112sm13tr 1.3v 1.24v 1.36v 2.4v lk112sm14tr (*) 1.4v 1.34v 1.46v 2.4v lk112sm15tr 1.5v 1.44v 1.56v 2.4v lk112sm16tr 1.6v 1.54v 1.66v 2.4v lk112sm17tr (*) 1.7v 1.64v 1.76v 2.4v lk112sm18tr 1.8v 1.74v 1.86v 2.4v lk112sm19tr (*) 1.9v 1.84v 1.96v 2.4v lk112sm20tr (*) 2.0v 1.94v 2.06v 3.0v lk112sm21tr 2.1v 2.04v 2.16v 3.1v lk112sm22tr (*) 2.2v 2.14v 2.26v 3.2v lk112sm23tr (*) 2.3v 2.24v 2.36v 3.3v lk112sm24tr (*) 2.4v 2.34v 2.46v 3.4v lk112sm25tr 2.5v 2.44v 2.56v 3.5v lk112sm26tr (*) 2.6v 2.54v 2.66v 3.6v lk112sm27tr (*) 2.7v 2.64v 2.76v 3.7v lk112sm28tr 2.8v 2.74v 2.86v 3.8v lk112sm29tr (*) 2.9v 2.84v 2.96v 3.9v lk112sm30tr 3.0v 2.94v 3.06v 4.0v lk112sm31tr (*) 3.1v 3.04v 3.16v 4.1v lk112sm32tr 3.2v 3.14v 3.26v 4.2v lk112sm33tr 3.3v 3.24v 3.36v 4.3v lk112sm34tr (*) 3.4v 3.335v 3.465v 4.4v lk112sm35tr (*) 3.5v 3.435v 3.565v 4.5v lk112sm36tr 3.6v 3.535v 3.655v 4.6v lk112sm37tr (*) 3.7v 3.630v 3.770v 4.7v lk112sm38tr 3.8v 3.725v 3.875v 4.8v lk112sm39tr (*) 3.9v 3.825v 3.975v 4.9v lk112sm40tr 4.0v 3.920v 4.080v 5.0v lk112sm41tr (*) 4.1v 4.020v 4.180v 5.1v lk112sm42tr (*) 4.2v 4.120v 4.280v 5.2v lk112sm43tr (*) 4.3v 4.215v 4.385v 5.3v lk112sm44tr (*) 4.4v 4.315v 4.485v 5.4v lk112sm45tr (*) 4.5v 4.410v 4.590v 5.5v lk112sm46tr (*) 4.6v 4.510v 4.690v 5.6v lk112sm47tr 4.7v 4.605v 4.795v 5.7v lk112sm48tr (*) 4.8v 4.705v 4.895v 5.8v lk112sm49tr (*) 4.9v 4.800v 5.000v 5.9v lk112sm50tr 5.0v 4.900v 5.100v 6.0v lk112sm55tr 5.5v 5.390v 5.610v 6.5v lk112m60tr 6.0v 5.880v 6.120v 7.0v lk112sm80tr 8.0v 7.840v 8.160v 9.0v
lk112s series 3/12 table 2: absolute maximum ratings figure 2: pin connection (top view) table 3: pin description table 4: electrical characteristics for lk112s (t j = 25c, v in =v out +1v (see note 1), i out =0ma, v shdn =1.8v, c i = 1 f, c o = 2.2 f, c bypass = 0.1 f unless otherwise specified) note 1: for version with output voltage less than 2v v in =2.4v note 2: only for version with output voltage more than 2.1v symbol parameter value unit v i dc input voltage 16 v v shdn shutdown input voltage 16 v i o output current internally limited t stg storage temperature range -55 to +150 c t op operating junction temperature range -30 to +80 c sot23-5l pin n symbol name and function 1 shdn shutdown input: disables the regulator when is connected to gnd or to positive voltage less than 0.6v 2 gnd ground pin: internally connected to the die attach flag to decrease the total thermal resistance and increase the package ability to dissipate power. 3 bypass bypass pin: bypass with 0.1 f to improve the v ref thermal noise performances. 4 out output port 5 in input port symbol parameter test conditions min. typ. max. unit i d quiescent current on mode (except i shdn ) 175 250 a off modev i = 8v v shdn = 0v 0 0.1 a v o output voltage i o = 30ma (see table) ? v o line regulation v i = v o +1v to v o +6v, v o 5.6v 0.7 20 mv v i = v o +1v to v o +6v, v o > 5.6v 0.8 40 mv ? v o load regulation i o = 1 to 60ma 15 30 mv i o = 1 to 200ma 30 90 mv v d dropout voltage i o = 60 ma (see note 2) 0.17 0.24 v i o = 200 ma (see note 2) 0.35 0.5 v i sc short circuit current 200 ma svr supply voltage rejection v i = v o +1.5v c byp = 0.1 f c o = 10 f f = 400hz i o = 30ma 55 db en output noise voltage b= 10hz to 80khz c byp = 0.1 f c o = 10 fv i = v o +1.5v, i o = 60ma 30 vrms i shdn shutdown input current v shdn = 1.8v output on 12 35 a v shdn shutdown input logic output on output off 1.8 0.6 v v ? v o /t j output voltage temperature coefficient i o = 10ma 0.09 mv/c
lk112s series 4/12 typical characteristics (unless otherwise specified t j = 25c, c i =1 f, c o =2.2 f, c byp =100nf) figure 3: output voltage vs temperature figure 4: output voltage vs temperature figure 5: line regulation vs temperature figure 6: load regulation vs temperature figure 7: dropout voltage vs temperature figure 8: short circuit current vs dropout voltage
lk112s series 5/12 figure 9: output voltage vs input voltage figure 10: shutdown voltage vs temperature figure 11: shutdown current vs shutdown voltage figure 12: supply voltage rejection vs temperature figure 13: supply voltage rejection vs output current figure 14: supply voltage rejection vs frequency
lk112s series 6/12 figure 15: supply voltage rejection vs temperature figure 16: quiescent current vs temperature figure 17: quiescent current vs input voltage figure 18: quiescent current vs shutdown voltage figure 19: quiescent current vs temperature figure 20: reverse current vs reverse voltage
lk112s series 7/12 figure 21: stability figure 22: spectrum noise figure 23: start-up transient figure 24: start-up transient figure 25: line transient figure 26: line transient v i =3.5v, v o =2.5v, v shdn = 0 to 1.8v, r l =2.5k ? f, c o =4.7 f, c by =10nf v i =3.5v, v o =2.5v, v shdn = 0 to 1.8v, r l =68 ? f, c o =4.7 f, c by =100nf v i =3.5 to 4.5v, v o =2.5v, v shdn =1.8v, i o =30ma, no c i , c o =10 f, c by =100nf, t s =t f =2 s v i =3.5 to 4.5v, v o =2.5v, v shdn =1.8v, i o =30ma, no c i , c o =10 f, c by =10nf, t s =t f =2 s
lk112s series 8/12 figure 27: line transient figure 28: load transient figure 29: load transient figure 30: load transient v i =3.5 to 4.5v, v o =2.5v, v shdn =1.8v, i o =30ma, no c i , c o =1 f, c by =1nf, t s =t f =2 s v i =3.5 v, v o =2.5v, v shdn =1.8v, i o =50 to 100ma, c i =1 f, c o =2.2 f, c by =10nf, t s =t f =250ns v i =3.5v, v o =2.5v, v shdn =1.8v, i o =50 to 100ma, c i 1 f, c o =10 f, c by =100nf, t s =t f =250ns v i =4.8 v, v o =3.8v, v shdn =1.8v, i o =50 to 100ma, c i =1 f, c o =2.2 f, c by =10nf, t s =t f =250ns
lk112s series 9/12 dim. mm. mils min. typ max. min. typ. max. a 0.90 1.45 35.4 57.1 a1 0.00 0.10 0.0 3.9 a2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 c 0.09 0.20 3.5 7.8 d 2.80 3.00 110.2 118.1 e 1.50 1.75 59.0 68.8 e0.95 37.4 h 2.60 3.00 102.3 118.1 l 0.10 0.60 3.9 23.6 sot23-5l mechanical data 7049676c .
lk112s series 10/12 dim. mm. inch min. typ max. min. typ. max. a 180 7.086 c 12.8 13.0 13.2 0.504 0.512 0.519 d 20.2 0.795 n 60 2.362 t 14.4 0.567 ao 3.13 3.23 3.33 0.123 0.127 0.131 bo 3.07 3.17 3.27 0.120 0.124 0.128 ko 1.27 1.37 1.47 0.050 0.054 0.0.58 po 3.9 4.0 4.1 0.153 0.157 0.161 p 3.9 4.0 4.1 0.153 0.157 0.161 tape & reel sot23-xl mechanical data
lk112s series 11/12 table 5: revision history date revision description of changes 31-aug-2004 2 mistake on fig. 19. 31-jan-2005 3 change maturity code.
lk112s series 12/12 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics all other names are the property of their respective owners ? 2005 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 - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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