ka317l ? 3-terminal 0.1a posi tive adjustable regulator ? 2002 fairchild semiconductor corporation www.fairchildsemi.com ka317l rev. 1.1.0 1 december 2012 ka317l 3-terminal 0.1a positive adjustable regulator features ? output current in excess of 100 ma ? output adjustable between 1.2 v and 37 v ? internal thermal overload protection ? internal short circuit current limiting ? output transistor safe area compensation ? floating operation for high-voltage applications ordering information block diagram figure 1. block diagram part number operating temperature range top mark package packing method ka317lzta 0 c to +125 c ka317lz to-92 ammo rlimit 3 vin vo 1 voltage reference vadj 2 protection circuitry input output limit adj description the ka317l is a 3-terminal, adjustable, positive-volt- age regulator capable of supplying in excess of 100 ma over an output voltage range of 1.2 v to 37 v. this volt- age regulator requires only two external resistors to set the output voltage. to-92 1. adj 2. output 3. input 1
ka317l ? 3-terminal 0.1a posi tive adjustable regulator ? 2002 fairchild semiconductor corporation www.fairchildsemi.com ka317l rev. 1.1.0 2 absolute maximum ratings stresses exceeding the absolute maximum ratings may damage the device. the device may not function or be opera- ble above the recommended operating conditions and stressing the parts to these levels is not recommended. in addi- tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. values are at t a = 25c unless otherwise noted. electrical characteristics v i - v o = 5 v, i o = 40 ma, 0c t j +125c, p d(max) = 625 mw, unless otherwise specified. note: 1. load and line regulation are specified at constant junction temperature. change in v o due to heating effects must be taken into account separately. pulse testing with low duty cycle is used. symbol parameter value unit v i - v o input-output voltage differential 40 v p d power dissipation internally limited w t j operating junction temperature range 0 ~ +125 c t stg storage temperature range -65 ~ +125 c symbol parameter conditions min. typ. max. unit r line line regulation (1) t a = +25 c, 3 v v i ? v o 40 v 0.01 0.04 %/v 3 v v i ? v o 40 v 0.02 0.07 %/v r load load regulation (1) t a = +25 c, 10 ma i o 100 ma, v o 5 v 525mv t a = +25 c, 10 ma i o 100 ma, v o 5 v 0.1 0.5 %/v o 10 ma i o 100 ma, v o 5 v 20 70 mv 10 ma i o 100 ma, v o 5 v 0.3 1.5 %/v o i adj adjustment pin current 50 100 a i adj adjustment pin current change 3 v v i - v o 40 v, 10 ma i o 100 ma, p d < p dmax 0.2 5 a v ref reference voltage 3 v < v i - v o < 40 v, 10 ma i o 100 ma, p d p dmax 1.20 1.25 1.30 v st t temperature stability 0.7 % i l(min) minimum load current to maintain regulation v i - v o = 40 v 3.5 10 ma i o(max) maximum output current v i - v o 15v, p d < p dmax 100 200 ma v i - v o 40 v, p d < p dmax , t a = +25 c 25 50 ma e n rms noise, %/v out t a = +25 c, 10 hz < f < 10 khz 0.003 %/v o rr ripple rejection v o = 10 v, f = 120 hz, without c adj 65 db v o = 10 v, f = 120 hz, c adj = 10 f6680db st long-term stability t j = +125 c, 1000 hours 0.3 %
ka317l ? 3-terminal 0.1a posi tive adjustable regulator ? 2002 fairchild semiconductor corporation www.fairchildsemi.com ka317l rev. 1.1.0 3 typical application figure 2. 5v electronic shutdown regulator d1 protects the device during an input short circuit. figure 3. slow turn-on regulator figure 4. current regulator ka317l 120 output input 1k ksp2222 720 ttl control 1.0 f 1n4002 d1 v adj v o minimum v o = 1.25v + ka317l output input ksp2907 50k 1n4001 1.0 f + v adj v o 240 r2 output input r2 v o i adj v adj r1 i o ka317l i omax v ref r1 ---------------- - ?? ?? i adj 1.25v r1 --------------- - @ + = i omax v ref r1 r2 + ---------------------- ?? ?? =i adj + 1.25v r1 r2 + ---------------------- @ 5ma i o 500ma <<
ka317l ? 3-terminal 0.1a posi tive adjustable regulator ? 2002 fairchild semiconductor corporation www.fairchildsemi.com ka317l rev. 1.1.0 4 physical dimensions figure 6. 3-lead, to-92, molded, 0.200 in line spacing lead form package drawings are provided as a service to customers considering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawing and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ . for current tape and reel specifications, visit fairchild semiconductor?s online packaging area: http://www.fairchildsemi.com/products/discrete/pdf/to92_tr.pdf . d
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