unisonic technologies co., ltd LM317 linear integrated circuit www.unisonic.com.tw 1 of 5 copyright ? 2014 unisonic technologies co., ltd qw-r101-009.l high current 1.3v to 37v adjustable voltage regulator ? description the utc LM317 is an adjustable 3-terminal positive voltage regulator, designed to supply 1a of output current with voltage adjustable from 1.3v ~ 37v. ? features *output voltage adjust able from 1.3v ~ 37v *output current in excess of 1a *internal short circuit protection. *internal over tem perature protection. *output transistor safe area compensation to-220 1 to-263 1 to-252 1 to-3 to-220f 1 1 sot-223 1 2 to-263-3 1 ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 LM317k-aa3-r LM317g-aa3-r sot-223 adj o i tape reel LM317k-ta3-t LM317g-ta3-t to-220 adj o i tube LM317k-tf3-t LM317g-tf3-t to-220f adj o i tube LM317k-tn3-r LM317g-tn3-r to-252 adj o i tape reel LM317k-tq2-r LM317g-tq2-r to-263 adj o i tape reel LM317k-tq2-t LM317g-tq2-t to-263 adj o i tube LM317k-tq3-r LM317g-tq3-r to-263-3 adj o i tape reel LM317k-tq3-t LM317g-tq3-t to-263-3 adj o i tube LM317k-t30-y LM317g-t30-y to-3 i adj o tray note: 1. pin assignment: i:v in o:v out 2. pin 3 on to-3 is case (1) r: tape reel, t: tube, y: tray (2) aa3: sot-223, ta3: to-220, tf3: to-220f, tn3: to-252, tq2: to-263, tq3: to-263-3 t30: to-3 (3) g: halogen free, k: lead free LM317k-aa3-r (1)packing type (2)package type (3)lead plating
LM317 linear integrated circuit unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r101-009.l ? marking information package marking sot-223 to-220 to-220f to-252 to-263 to-263-3 to-3 ? block diagram
LM317 linear integrated circuit unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r101-009.l ? absolute maximum ratings (t a =25 ? c, unless otherwise specified) parameter symbol ratings unit input - output voltage difference v in -v out 40 v power dissipation p d internal limited junction temperature t j +125 ? c operating temperature t opr -40 ~ +85 ? c storage temperature t stg -40 ~ +150 ? c note:1. absolute maximum ratings are st ress ratings only and functional device operation is not implied. the device could be damaged beyond absolute maximum ratings. ? thermal data parameter symbol ratings unit junction-to-ambient to-252 ja 112 ? c/w to-220/to-220f to-263/to-263-3 65 sot-223 165 to-3 35 junction-to-case to-252 jc 12 ? c/w to-220/to-263 to-263-3 5 to-220f 7.8 sot-223 23 to-3 3 ? electrical characteristics (v in -v out =5v, i out =10ma, t a =25 ? c, 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 1a 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 1a, p d Q 20w 0.2 5 a reference voltage v ref 3v Q v in -v out Q 40v, 10ma Q i out Q 1a, p d Q 20w 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 20w 0.2 0.3 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.
LM317 linear integrated circuit unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r101-009.l ? application circuits utc LM317 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 5maLM317 )+i adj = v ref i o(max) =(
LM317 linear integrated circuit unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r101-009.l ? 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 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 expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written 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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