unisonic technologies co., ltd lm317m linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2011 unisonic technologies co., ltd qw-r101-014,h medium current 1.2v to 37v adjustable voltage regulator ? description the utc lm317m is an adjustable 3-terminal positive voltage regulator, designed to supply 500ma of output current with voltage adjustable from 1.2v ~ 37v. ? features *output voltage adjustable from 1.2v ~ 37v *output current in excess of 500ma *internal thermal overload protection *internal short circuit current limiting *output transistor safe area compensation ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 4 5 6 7 8 lm317ml-aa3-r lm317mg-aa3-r sot-223 adj o i - - - - - tape reel lm317ml-s08-r LM317MG-S08-R sop-8 i o o adj x o o x tape reel lm317ml-s08-t lm317mg-s08-t sop-8 i o o adj x o o x tube lm317ml-ta3-t lm317mg-ta3-t to-220 adj o i - - - - - tube lm317ml-tn3-r lm317mg-tn3-r to-252 adj o i - - - - - tape reel lm317ml-tn3-t lm317mg-tn3-t to-252 adj o i - - - - - tube note: pin assignment: i:v in o:v out x: nc
lm317m linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r101-014,h ? block diagram
lm317m linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r101-014,h ? absolute maximum ratings parameter symbol ratings unit input-output voltag e differential v in -v out 40 v power dissipation p d internally limited w junction temperature t j +125 operating temperature t opr -40 ~ +85 storage temperature t stg -40 ~ +150 note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol ratings unit junction to ambient sot-223 ja 150 /w sop-8 165 to-220 70 to-252 92 junction to case sot-223 jc 15 /w sop-8 20 to-220 5 to-252 5 ? electrical characteristics (v in -v out =5v, i out =0.1a, t a =25 , unless otherwise specified.) parameter symbol test conditions min typ max unit line regulation v out /v out 3v Q v in -v out Q 40v 0.01 0.04 %/v load regulation v out 10ma Q i out Q 0.5a v out Q 5v 5 25 mv v out R 5v 0.1 0.5 % adjustable pin current i adj 50 100 a adjustable pin current change i adj 3v Q v in -v out Q 40v, 10ma Q i out Q 0.5a, p d 7.5w 0.2 5 a reference voltage v ref 3v Q v in -v out Q 40v, 10ma Q i out Q 0.5a, p d 7.5w 1.20 1.25 1.30 v temperature stability t min Q t j Q t max 0.7 %/v out minimum load current for regulation i l ( min ) v in -v out =40v 3.5 10 ma maximum output current i o ( max ) v in -v out =40v, p d Q 7.5w 0.1 0.2 a rms noise vs. %of v out en 10h z Q f Q 10kh z 0.003 %/v out ripple rejection rr v out =10v,f=120h z c adj =0 65 db c adj =10 f66 80 note: c adj is connected between adjust pin and ground.
lm317m linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r101-014,h ? application circuits utc lm317m 1 2 3 1 2 3 v out v in v adj r2 240 50k d1 1n4001 10 f i out i adj r1 r2 vo ut v in r1 1.25v r1 i o(min) =( v ref r1+r2 )+i adj = 1.25v r1+r2 5ma lm317m linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r101-014,h ? typical characteristics 0255075100125 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 temperature output voltage deviation, ? v out (%) -50 -25 0 25 50 75 100 125 35 40 45 50 55 60 adjustment current, i adj ( a) temperature load regulation vs. temperature adjustment current vs. temperature v in =15v v out =10v min output current, i out (ma) output current, i out (a) utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expe cted to result in personal injury. reproduction in whole or in part is prohibited without the prior writ ten consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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