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? semiconductor components industries, llc, 2008 march, 2008 - rev. 11 1 publication order number: lm317l/d lm317l, ncv317lb 100 ma adjustable output, positive voltage regulator the lm317l is an adjustable 3-terminal positive voltage regulator capable of supplying in excess of 100 ma over an output voltage range of 1.2v to 37 v. this voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. further, it employs internal current limiting, thermal shutdown and safe area compensation, making them essentially blow-out proof. the lm317l serves a wide variety of applications including local, on card regulation. this device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the lm317l can be used as a precision current 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 ? standard 3-lead transistor package ? eliminates stocking many fixed voltages ? pb-free packages are available ? ncv prefix for automotive and other applications requiring site and control changes simplified application * c in is required if regulator is located an appreciable ** distance from power supply filter. ** c o is not needed for stability, however, ** it does improve transient response. since i adj is controlled to less than 100 a, the error associated with this term is negligible in most applications. lm317l v in v out r 1 240 r 2 adjust i adj c in * 0.1 f + c o ** 1.0 f v out 1.25v 1 r 2 r 1 i adj r 2 ordering information see detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. http://onsemi.com low current three-terminal adjustable positive voltage regulator to-92 z suffix case 29 pin 1. adjust 2. v out 3. v in soic-8 d suffix case 751 1 8 pin 1. v in 2. v out 3. v out 4. adjust 5. n.c. 6. v out 7. v out 8. n.c. 1 2 3 1 2 bent lead tape & reel ammo pack straight lead bulk pack 3
lm317l, ncv317lb http://onsemi.com 2 maximum ratings rating symbol value unit input-output voltage differential v i -v o 40 vdc power dissipation case 29 (to-92) t a = 25 c thermal resistance, junction-to-ambient thermal resistance, junction-to-case case 751 (soic-8) (note 1) t a = 25 c thermal resistance, junction-to-ambient thermal resistance, junction-to-case p d r ja r jc p d r ja r jc internally limited 160 83 internally limited 180 45 w c/w c/w w c/w c/w operating junction temperature range t j -40 to +150 c storage temperature range t stg -65 to +150 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 1. soic-8 junction-to-ambient thermal resistance is for minimum recommended pad size. refer to figure 24 for thermal resistance variation versus pad size. 2. this device series contains esd protection and exceeds the following tests: human body model, 2000 v per mil std 883, method 3015. machine model method, 200 v. 18k 6.8v 6.8v 350 300 300 300 3.0k 300 70 200k 2.5 60 50 130 8.67k 500 400 2.4k 12.8k v out 5.1k 6.3v 2.0k 6.0k adjust v in 180 180 10 p f 10 p f figure 1. representative schematic diagram
lm317l, ncv317lb http://onsemi.com 3 electrical characteristics (v i -v o = 5.0 v; i o = 40 ma; t j = t low to t high (note 3); i max and p max (note 4); unless otherwise noted.) lm317l, lb, ncv317lb characteristics figure symbol min typ max unit line regulation (note 5) t a = 25 c, 3.0 v v i - v o 40 v 1 reg line - 0.01 0.04 %/v load regulation (note 5), t a = 25 c 10 ma i o i max - lm317l v o 5.0 v v o 5.0 v 2 reg load - - 5.0 0.1 25 0.5 mv % v o adjustment pin current 3 i adj - 50 100 a adjustment pin current change 2.5 v v i - v o 40 v, p d p max 10 ma i o i max - lm317l 1, 2 i adj - 0.2 5.0 a reference voltage 3.0 v v i - v o 40 v, p d p max 10 ma i o i max - lm317l 3 v ref 1.20 1.25 1.30 v line regulation (note 5), 3.0 v v i - v o 40 v 1 reg line - 0.02 0.07 %/v load regulation (note 5) 10 ma i o i max - lm317l v o 5.0 v v o 5.0 v 2 reg load - - 20 0.3 70 1.5 mv % v o temperature stability (t low t j t high ) 3 t s - 0.7 - % v o minimum load current to maintain regulation (v i - v o = 40 v) 3 i lmin - 3.5 10 ma maximum output current v i - v o 6.25 v, p d p max , z package v i - v o 40 v, p d p max , t a = 25 c, z package 3 i max 100 - 200 20 - - ma rms noise, % of v o t a = 25 c, 10 hz f 10 khz - n - 0.003 - % v o ripple rejection (note 6) v o = 1.2 v, f = 120 hz c adj = 10 f, v o = 10.0 v 4 rr 60 - 80 80 - - db thermal shutdown (note 7) - - - 180 - c long term stability, t j = t high (note 8) t a = 25 c for endpoint measurements 3 s - 0.3 1.0 %/1.0 k hrs. 3. t low to t high = 0 to +125 c for lm317l -40 to +125 c for lm317lb, ncv317lb 4. i max = 100 map max = 625 mw 5. load and line regulation are specified at constant junction temperature. changes in v o due to heating effects must be taken into account separately. pulse testing with low duty cycle is used. 6. c adj , when used, is connected between the adjustment pin and ground. 7. thermal characteristics are not subject to production test. 8. since long-term stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability from lot to lot.
lm317l, ncv317lb http://onsemi.com 4 *pulse testing required: 1% duty cycle is suggested. line regulation (%/v) = v oh - v ol x 100 * v cc v ih v il v in v out v oh v ol r l + 1 f c o 240 1% r 1 adjust r2 1 % c in 0.1 f lm317l i adj figure 2. line regulation and i ad j /line test circuit v ol *pulse testing required: 1% duty cycle is suggested. load regulation (mv) = v o (min load) -v o (max load) load regulation (% v o ) = v o (min load) - v o (max load) x 100 v o (min load) v o (max load) lm317l c in 0.1 f adjust r 2 1% c o 1.0 f + * r l (max load) r l (min load) v out r 1 240 1% v in *v in i adj i l figure 3. load regulation and i ad j / load test circuit v o (min load) pulse testing required: 1% duty cycle is suggested. lm317l v in v out adjust r 1 240 1% + 1 f c o r l c in r 2 1% to calculate r 2 : v out = i set r 2 + 1.250 v assume i set = 5.25 ma i l i adj i set v ref v o v i 0.1 f figure 4. standard test circuit
lm317l, ncv317lb http://onsemi.com 5 lm317l v in v out v out = 1.25 v r l c in 0.1 f adjust r 1 240 1% d 1 * 1n4002 c o + 1 f 14.30v 4.30v r 2 1.65k 1% ** 10 f + *d 1 discharges c adj if output is shorted to ground. f = 120 hz v o **c adj provides an ac ground to the adjust pin. figure 5. ripple rejection test circuit v in -v out , input-output voltage differential (v) i o , output current (a) figure 6. load regulation figure 7. ripple rejection figure 8. current limit figure 9. dropout voltage 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 -50 -25 0 25 50 75 100 125 150 v out t j , junction temperature ( c) , output voltage change (%) v in = 45 v v out = 5.0 v i l = 5.0 ma to 40 ma v in = 10 v v out = 5.0 v i l = 5.0 ma to 100 ma 80 70 60 50 rr, ripple rejection (db) -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) i l = 40 ma f = 120 hz v out = 10 v v in = 14 v to 24 v -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) 2.5 2.0 1.5 1.0 0.5 i l = 5.0 ma i l = 100 ma 0.50 0.40 0.30 0.20 0.10 0 0 1020304050 v in -v out , input-output voltage differential (v) t j = 25 c t j = 150 c
lm317l, ncv317lb http://onsemi.com 6 i b , quiescent current (ma) figure 10. minimum operating current figure 11. ripple rejection versus frequency 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 010203040 v in -v out , input-output voltage differential (v) t j = 55 c t j = 25 c t j = 150 c 100 90 80 70 60 50 40 30 20 10 10 100 1.0 k 10 k 100 k 1.0 m f, frequency (hz) rr, ripple rejection (db) i l = 40 ma v in = 5.0 v 1.0 v pp v out = 1.25 v noise voltage ( v) v out , output voltage change (%) i adj , adjustment pin current ( a) figure 12. temperature stability figure 13. adjustment pin current figure 14. line regulation figure 15. output noise -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) 1.260 1.250 1.240 1.230 1.220 ref v , reference voltage (v) v in = 4.2 v v out = v ref i l = 5.0 ma -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) 80 70 65 60 55 50 45 40 35 v in = 6.25 v v out = v ref i l = 10 ma i l = 100 ma -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 v in = 4.25 v to 41.25 v v out = v ref i l = 5 ma -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( c) 10 8.0 6.0 4.0 bandwidth 100 hz to 10 khz
lm317l, ncv317lb http://onsemi.com 7 v out , output voltage deviation (v) c l = 0.3 f; c adj = 10 f figure 16. line transient response figure 17. load transient response 0.3 0.2 0.1 0 -0.1 -0.2 100 50 0 010203040 t, time ( s) i current (ma) l , load c l = 1 f; c adj = 10 f v in = 15 v v out = 10 v i nl = 50 ma t j = 25 c i l -0.3 v votlage change (v) in v voltage deviation (v) out , input , output c l = 1.0 f; c adj = 10 f v in 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 1.0 0.5 0 010203040 t, time ( s) v out = 10 v i l = 50 ma t j = 25 c c l = 0; without c adj applications information basic circuit operation the lm317l is a 3-terminal floating regulator. in operation, the lm317l develops and maintains a nominal 1.25 v reference (v ref ) between its output and adjustment terminals. this reference voltage is converted to a programming current (i prog ) by r 1 (see figure 13), and this constant current flows through r 2 to ground. the regulated output voltage is given by: v out = v ref (1 + ) + i adj r 2 r 2 r 1 since the current from the adjustment terminal (i adj ) represents an error term in the equation, the lm317l was designed to control i adj to less than 100 a and keep it constant. to do this, all quiescent operating current is returned to the output terminal. this imposes the requirement for a minimum load current. if the load current is less than this minimum, the output voltage will rise. since the lm317l is a floating regulator, it is only the voltage differential across the circuit which is important to performance, and operation at high voltages with respect to ground is possible. + v ref adjust v in v out lm317l r 1 i prog v out r 2 i adj v ref = 1.25 v typical figure 18. basic circuit configuration load regulation the lm317l is capable of providing extremely good load regulation, but a few precautions are needed to obtain maximum performance. for best performance, the programming resistor (r1) should be connected as close to the regulator as possible to minimize line drops which effectively appear in series with the reference, thereby degrading r egulation. the ground end of r2 can be returned near the load ground to provide remote ground sensing and improve load regulation. external capacitors a 0.1 f disc or 1.0 f tantalum input bypass capacitor (c in ) is recommended to reduce the sensitivity to input line impedance. the adjustment terminal may be bypassed to ground to improve ripple rejection. this capacitor (c adj ) prevents ripple from being amplified as the output voltage is increased. a 10 f capacitor should improve ripple rejection about 15 db at 120 hz in a 10 v application. although the lm317l is stable with no output capacitance, like any feedback circuit, certain values of external capacitance can cause excessive ringing. an output capacitance (c o ) in the form of a 1.0 f tantalum or 25 f aluminum electrolytic capacitor on the output swamps this effect and insures stability.
lm317l, ncv317lb http://onsemi.com 8 protection diodes when external capacitors are used with any ic regulator it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current points into the regulator. figure 14 shows the lm317l with the recommended protection diodes for output voltages in excess of 25 v or high capacitance values (c o > 10 f, c adj > 5.0 f). diode d 1 prevents c o from discharging thru the ic during an input short circuit. diode d 2 protects against capacitor c adj discharging through the ic during an output short circuit. the combination of diodes d 1 and d 2 prevents c adj from discharging through the ic during an input short circuit. d 1 v in c in 1n4002 lm317l v out r 1 + c o d 2 r 2 c adj 1n4002 adjust figure 19. voltage regulator with protection diodes figure 20. adjustable current limiter figure 21. 5.0 v electronic shutdown regulator figure 22. slow turn-on regulator figure 23. current regulator v ref +25v v in lm317l v out r 1 v o 1.25k adjust i o d2 1n914 1n5314 r 2 500 * to provide current limiting of i o to the system ground, the source of the current limiting diode must be tied to a negative voltage below - 7.25 v. r 2 v ref r 1 = v ss * d1 1n914 v o < p ov + 1.25 v + v ss i lmin - i p < i o < 100 ma - i p as shown o < i o < 95 ma + 10 f v in v out 240 1n4002 lm317l adjust mps2907 r 2 50k v in d 1 1n4002 v out 120 adjust 720 + 1.0 f mps2222 1.0k ttl control lm317l minimum v out = 1.25 v d 1 protects the device during an input short circuit. lm317l v in r 1 r 2 adjust i adj i out i outmax = v ref + i adj 5.0 ma < i out < 100 ma v out 1.25 v i outmax = v ref + i adj 1.25 v i dss i omax + i dss r 1 r 1 + r 2 r 1 r 1 + r 2
lm317l, ncv317lb http://onsemi.com 9 30 50 70 90 110 130 150 0.4 0.8 1.2 1.6 2.0 2.4 2.8 0203050 40 10 l, length of copper (mm) 170 3.2 r ja p d r , thermal resistance ja junction-to-air ( c/w) , maximum power dissipation (w) ??? ??? ??? ??? ??? ??? ??? ??? figure 24. sop-8 thermal resistance and maximum power dissipation versus p.c.b. copper length p d(max) for t a = 50 c
lm317l, ncv317lb http://onsemi.com 10 ordering information device operating temperature range package shipping ? lm317lbd t j = -40 c to +125 c soic-8 98 units / rail lm317lbdg soic-8 (pb-free) 98 units / rail lm317lbdr2 soic-8 2500/tape & reel lm317lbdr2g soic-8 (pb-free) 2500/tape & reel lm317lbz to-92 2000 units / bag LM317LBZG to-92 (pb-free) 2000 units / bag lm317lbzra to-92 2000 tape & reel lm317lbzrag to-92 (pb-free) 2000 tape & reel lm317lbzrp to-92 2000 ammo pack lm317lbzrpg to-92 (pb-free) 2000 ammo pack ncv317lbdg* soic-8 (pb-free) 98 units / rail ncv317lbdr2* soic-8 2500/tape & reel ncv317lbdr2g* soic-8 (pb-free) 2500/tape & reel ncv317lbzg* to-92 (pb-free) 2000 units / bag ncv317lbzrag* to-92 (pb-free) 2000 tape & reel lm317ld t j = 0 c to +125 c soic-8 98 units / rail lm317ldg soic-8 (pb-free) 98 units / rail lm317ldr2 soic-8 2500/tape & reel lm317ldr2g soic-8 (pb-free) 2500/tape & reel lm317lz to-92 2000 units / bag lm317lzg to-92 (pb-free) 2000 units / bag lm317lzra to-92 2000 tape & reel lm317lzrag to-92 (pb-free) 2000 tape & reel lm317lzre to-92 2000 tape & reel lm317lzreg to-92 (pb-free) 2000 tape & reel lm317lzrm to-92 2000 ammo pack lm317lzrmg to-92 (pb-free) 2000 ammo pack lm317lzrp to-92 2000 ammo pack lm317lzrpg to-92 (pb-free) 2000 ammo pack ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. * ncv devices: t low = -40 c, t high = +125 c. guaranteed by design. ncv prefix is for automotive and other applications requiring site and control change.
lm317l, ncv317lb http://onsemi.com 11 package dimensions to-92 (to-226) z suffix case 29-11 issue am notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. contour of package beyond dimension r is uncontrolled. 4. lead dimension is uncontrolled in p and beyond dimension k minimum. r a p j l b k g h section x-x c v d n n xx seating plane dim min max min max millimeters inches a 0.175 0.205 4.45 5.20 b 0.170 0.210 4.32 5.33 c 0.125 0.165 3.18 4.19 d 0.016 0.021 0.407 0.533 g 0.045 0.055 1.15 1.39 h 0.095 0.105 2.42 2.66 j 0.015 0.020 0.39 0.50 k 0.500 --- 12.70 --- l 0.250 --- 6.35 --- n 0.080 0.105 2.04 2.66 p --- 0.100 --- 2.54 r 0.115 --- 2.93 --- v 0.135 --- 3.43 --- 1 notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. contour of package beyond dimension r is uncontrolled. 4. lead dimension is uncontrolled in p and beyond dimension k minimum. r a p j b k g section x-x c v d n xx seating plane dim min max millimeters a 4.45 5.20 b 4.32 5.33 c 3.18 4.19 d 0.40 0.54 g 2.40 2.80 j 0.39 0.50 k 12.70 --- n 2.04 2.66 p 1.50 4.00 r 2.93 --- v 3.43 --- 1 t straight lead bulk pack bent lead tape & reel ammo pack
lm317l, ncv317lb http://onsemi.com 12 package dimensions soic-8 d suffix case 751-07 issue aj seating plane 1 4 5 8 n j x 45 k notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. 6. 751-01 thru 751-06 are obsolete. new standard is 751-07. a b s d h c 0.10 (0.004) dim a min max min max inches 4.80 5.00 0.189 0.197 millimeters b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.053 0.069 d 0.33 0.51 0.013 0.020 g 1.27 bsc 0.050 bsc h 0.10 0.25 0.004 0.010 j 0.19 0.25 0.007 0.010 k 0.40 1.27 0.016 0.050 m 0 8 0 8 n 0.25 0.50 0.010 0.020 s 5.80 6.20 0.228 0.244 -x- -y- g m y m 0.25 (0.010) -z- y m 0.25 (0.010) z s x s m 1.52 0.060 7.0 0.275 0.6 0.024 1.270 0.050 4.0 0.155 mm inches scale 6:1 *for additional information on our pb-free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. typical parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including typicals must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. lm317l/d publication ordering information n. american technical support : 800-282-9855 toll free ?usa/canada europe, middle east and africa technical support: ?phone: 421 33 790 2910 japan customer focus center ?phone: 81-3-5773-3850 literature fulfillment : ?literature distribution center for on semiconductor ?p.o. box 5163, denver, colorado 80217 usa ? phone : 303-675-2175 or 800-344-3860 toll free usa/canada ? fax : 303-675-2176 or 800-344-3867 toll free usa/canada ? email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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