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1/14 january 2005 output current up to 150ma low dropout voltage (350mv at i out =150ma) 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 lk112 series 2/14 table 1: order numbers and output voltage (*) available on request part number output voltage v out min v out max test voltage lk112m13tr 1.3v 1.24v 1.36v 2.4v lk112m14tr (*) 1.4v 1.34v 1.46v 2.4v lk112m15tr 1.5v 1.44v 1.56v 2.4v lk112m16tr 1.6v 1.54v 1.66v 2.4v lk112m17tr 1.7v 1.64v 1.76v 2.4v lk112m18tr 1.8v 1.74v 1.86v 2.4v lk112m19tr (*) 1.9v 1.84v 1.96v 2.4v lk112m20tr (*) 2.0v 1.94v 2.06v 3.0v lk112m21tr 2.1v 2.04v 2.16v 3.1v lk112m22tr (*) 2.2v 2.14v 2.26v 3.2v lk112m23tr (*) 2.3v 2.24v 2.36v 3.3v lk112m24tr (*) 2.4v 2.34v 2.46v 3.4v lk112m25tr 2.5v 2.44v 2.56v 3.5v lk112m26tr (*) 2.6v 2.54v 2.66v 3.6v lk112m27tr (*) 2.7v 2.64v 2.76v 3.7v lk112m28tr 2.8v 2.74v 2.86v 3.8v lk112m29tr (*) 2.9v 2.84v 2.96v 3.9v lk112m30tr 3.0v 2.94v 3.06v 4.0v lk112m31tr (*) 3.1v 3.04v 3.16v 4.1v lk112m32tr 3.2v 3.14v 3.26v 4.2v lk112m33tr 3.3v 3.24v 3.36v 4.3v lk112m34tr (*) 3.4v 3.335v 3.465v 4.4v lk112m35tr (*) 3.5v 3.435v 3.565v 4.5v lk112m36tr 3.6v 3.535v 3.655v 4.6v lk112m37tr (*) 3.7v 3.630v 3.770v 4.7v lk112m38tr 3.8v 3.725v 3.875v 4.8v lk112m39tr (*) 3.9v 3.825v 3.975v 4.9v lk112m40tr 4.0v 3.920v 4.080v 5.0v lk112m41tr (*) 4.1v 4.020v 4.180v 5.1v lk112m42tr (*) 4.2v 4.120v 4.280v 5.2v lk112m43tr (*) 4.3v 4.215v 4.385v 5.3v lk112m44tr (*) 4.4v 4.315v 4.485v 5.4v lk112m45tr (*) 4.5v 4.410v 4.590v 5.5v lk112m46tr (*) 4.6v 4.510v 4.690v 5.6v lk112m47tr 4.7v 4.605v 4.795v 5.7v lk112m48tr (*) 4.8v 4.705v 4.895v 5.8v lk112m49tr (*) 4.9v 4.800v 5.000v 5.9v lk112m50tr 5.0v 4.900v 5.100v 6.0v lk112m55tr 5.5v 5.390v 5.610v 6.5v lk112m60tr 6.0v 5.880v 6.120v 7.0v lk112m80tr 8.0v 7.840v 8.160v 9.0v
lk112 series 3/14 figure 2: connection diagram (top view) table 2: pin description table 3: absolute maximum ratings table 4: thermal data 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 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 +125 c symbol parameter sot23-5l unit r thj-case thermal resistance junction-case 81 c/w r thj-amb thermal resistance junction-ambient 255 c/w
lk112 series 4/14 table 5: electrical characteristics for lk112 (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 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 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 150ma 25 90 mv v d dropout voltage i o = 60 ma (see note 2) 0.17 0.24 v i o = 150 ma (see note 2) 0.29 0.35 v i o output current limit 150 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
lk112 series 5/14 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 figure 9: output voltage vs input voltage figure 10: shutdown voltage vs temperature
lk112 series 6/14 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 figure 15: supply voltage rejection vs temperature figure 16: quiescent current vs temperature
lk112 series 7/14 figure 17: quiescent current vs input voltage figure 18: quiescent current vs shutdown voltage figure 19: quiescent current vs output current figure 20: reverse current vs reverse voltage figure 21: stability figure 22: spectrum noise
lk112 series 8/14 figure 23: start-up transient figure 24: start-up transient figure 25: line transient figure 26: line transient figure 27: line transient figure 28: load 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 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
lk112 series 9/14 figure 29: load transient figure 30: load transient 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
lk112 series 10/14
lk112 series 11/14 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 .
lk112 series 12/14 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
lk112 series 13/14 table 6: revision history date revision description of changes 31-jan-2005 8 change maturity code.
lk112 series 14/14 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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