adjustable voltage regulator (positive) LM317L 3-terminal 100ma positive adjustable regulator features output current in excess of 100ma output adjustable between 1.2v and 37v internal thermal-overload protection internal short-circuit current-limiting output transistor safe-area compensation floating operation for high voltage applications moisture sensitivity level 3 discription this monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 100ma of load current with an output voltage adjustable over a 1.2 to 37v. it employs device internal current limiting, thermal shut-down and safe LM317L area compensation. lm317f block diagram jun. 2009 - rev.1.1 htc ordering information marking LM317L 317 package to-92 sot-89 1 1.adj 2. vout 3. vin 3. vin 2. vout 1. adj to-92 pkg sot-89 pkg
adjustable voltage regulator (positive) LM317L typical applications fig.5 programmable regulator c i is required when regulator is located in appreciable distance from power supply filter. co is not needed for stability, however, it does improve transi ent response. since l adj is controlled to less than 100?, the error associated with thi s term is negligible in most applications. htc 2
adjustable voltage regulator (positive) LM317L absolute maximum ratings (t a =25, unless otherwise specified) input-output voltage differential lead temperature power dissipation operating temperature range storage temperature range electrical characteristics (v i -vo=5v, io=40ma, 0t j 125, i max =100ma, unless otherwise specified) characteristic min. typ. max. unit 3vv i -vo40v 0.01 0.04 %/v 3vv i -vo40v 0.02 0.07 %/v 10 25 ? 0.1 0.5 %/vo 20 70 ? 0.3 1.5 %/vo adjustable pin current 46 100 ? 0.2 5 ? 1.20 1.25 1.30 v temperature stability 0.7 %/vo minimum load current to maintain regulation 100 200 ? 156 400 ? rms noise, % of v out 0.003 0.01 %/vo 60 ? 66 75 long-term stability, t j =t high * load and line regulation are specified at constant junction t emperature. change in v d due to heating effects must be taken into account separately . pulse testing with low duty is used. htc % ? rr measurements, 1000hr vo=10v, f=120hz t a =25, for end point p d p max t a =25, 10hzf10khz v i -vo5v, p d p max v i -vo40v, p d p max, t a = 25 without c adj c adj =10 ? 3vv i -vo40v 10?ioi max vo5v vo5v symbol t a =25, 10?ioi max e n st t i adj 10?ioi max vo5v 10?ioi max pp max 3vv in -v out 40v vo5v value v i -vo test condition internally limited -65 +125 v 40 230 unit 3 t lead p d t opr - t stg 0 +125 symbol characteristic vo v ref i adj reference voltage adjustable pin current cha ripple rejection l (min) st t a =0 125 v i -vo=40v maximum output current io (max) load regulation line regulation vo 1 0.3 10 3.5
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