View LM317_7487602.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

? semiconductor components industries, llc, 2013 april, 2013 ? rev. 13 1 publication order number: LM317/d LM317, ncv317 1.5 a adjustable output, positive voltage regulator the LM317 is an adjustable 3 ? terminal positive voltage regulator capable of supplying in excess of 1.5 a over an output voltage range of 1.2 v 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 it essentially blow ? out proof. the LM317 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 LM317 can be used as a precision current regulator. features ? output current in excess of 1.5 a ? output adjustable between 1.2 v and 37 v ? internal thermal overload protection ? internal short circuit current limiting constant with temperature ? output transistor safe ? area compensation ? floating operation for high voltage applications ? available in surface mount d 2 pak ? 3, and standard 3 ? lead transistor package ? ncv prefix for automotive and other applications requiring unique site and control change requirements; aec ? q100 qualified and ppap capable ? eliminates stocking many fixed voltages ? these are pb ? free devices figure 1. standard 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. v out 1.25v 1 r 2 r 1 i adj r 2 LM317 v in v out r 1 240 r 2 adjust i adj c in * 0.1 f + c o ** 1.0 f to ? 220 t suffix case 221ab pin 1. adjust 2. v out 3. v in d 2 pak ? 3 d2t suffix case 936 heatsink surface (shown as terminal 4 in case outline drawing) is connected to pin 2. 3 1 2 heatsink surface connected to pin 2. 3 1 2 http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. ordering information see general marking information in the device marking section on page 10 of this data sheet. device marking information
LM317, ncv317 http://onsemi.com 2 maximum ratings rating symbol value unit input ? output voltage differential v i ? v o ? 0.3 to 40 vdc power dissipation case 221a t a = +25 ? c p d internally limited w thermal resistance, junction ? to ? ambient ja 65 ? c/w thermal resistance, junction ? to ? case jc 5.0 ? c/w case 936 (d 2 pak ? 3) t a = +25 ? c p d internally limited w thermal resistance, junction ? to ? ambient ja 70 ? c/w thermal resistance, junction ? to ? case jc 5.0 ? c/w operating junction temperature range t j ? 55 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. electrical characteristics (v i ? v o = 5.0 v; i o = 0.5 a for d2t and t packages; t j = t low to t high (note 1); i max and p max (note 2); unless otherwise noted.) characteristics figure symbol min typ max unit line regulation (note 3), t a = +25 ? c, 3.0 v ? v i ? v o ? 40 v 1 reg line ? 0.01 0.04 %/v load regulation (note 3), t a = +25 ? c, 10 ma ? i o ? i max v o ? 5.0 v v o ? 5.0 v 2 reg load ? ? 5.0 0.1 25 0.5 mv % v o thermal regulation, t a = +25 ? c (note 4), 20 ms pulse ? reg therm ? 0.03 0.07 % v o /w adjustment pin current 3 i adj ? 50 100 a adjustment pin current change, 2.5 v ? v i ? v o ? 40 v, 10 ma ? i l ? i max , p d ? p max 1, 2 i adj ? 0.2 5.0 a reference voltage, 3.0 v ? v i ? v o ? 40 v, 10 ma ? i o ? i max , p d ? p max 3 v ref 1.2 1.25 1.3 v line regulation (note 3), 3.0 v ? v i ? v o ? 40 v 1 reg line ? 0.02 0.07 % v load regulation (note 3), 10 ma ? i o ? i max 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 ? 15 v, p d ? p max, t package v i ? v o = 40 v, p d ? p max , t a = +25 ? c, t package 3 i max 1.5 0.15 2.2 0.4 ? ? a rms noise, % of v o , t a = +25 ? c, 10 hz ? f ? 10 khz ? n ? 0.003 ? % v o ripple rejection, v o = 10 v, f = 120 hz (note 5) without c adj c adj = 10 f 4 rr ? 66 65 80 ? ? db thermal shutdown (note 6) ? ? ? 180 ? ? c long ? term stability, t j = t high (note 7), t a = +25 ? c for endpoint measurements 3 s ? 0.3 1.0 %/1.0 khrs. thermal resistance junction ? to ? case, t package ? r jc ? 5.0 ? ? c/w 1. t low to t high = 0 ? to +125 ? c, for LM317t, d2t. t low to t high = ? 40 ? to +125 ? c, for LM317bt, bd2t, t low to t high = ? 55 ? to +150 ? c, for ncv317bt, bd2t. 2. i max = 1.5 a, p max = 20 w 3. 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. 4. power dissipation within an ic voltage regulator produces a temperature gradient on the die, affecting individual ic componen ts on the die. these effects can be minimized by proper integrated circuit design and layout techniques. thermal regulation is the effect of t hese temperature gradients on the output voltage and is expressed in percentage of output change per watt of power change in a specified time. 5. c adj , when used, is connected between the adjustment pin and ground. 6. thermal characteristics are not subject to production test. 7. 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.
LM317, ncv317 http://onsemi.com 3 figure 2. representative schematic diagram this device contains 29 active transistors. 310 310 230 120 5.6 k v in 170 6.3 v 160 12 k 5.0 pf 6.8 k 13 k 6.3 v 105 4.0 0.1 v out adjust 12.5 k 2.4 k 30pf 6.3 v 125 k 135 190 12.4 k 3.6 k 5.8 k 110 5.1 k 6.7 k 510 200 30pf figure 3. line regulation and i ad j /line test circuit *pulse testing required. * 1% duty cycle * is suggested. * v cc v ih v il v in v out r l + 1.0 f c o 240 1% r 1 adjust r 2 1% c in 0.1 f i adj LM317 lineregulation(% v) |v oh Cv ol | |v ol | x100 v oh v ol
LM317, ncv317 http://onsemi.com 4 figure 4. load regulation and i adj /load test circuit figure 5. standard test circuit figure 6. ripple rejection test circuit v o LM317 v o (min load) - v o (max load) *pulse testing required. * 1% duty cycle is suggested. load regulation (mv) = v o (min load) - v o (max load) load regulation (% v o ) = x 100 v o (min load) v o (max load) 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 i v in i adj i l * pulse testing required. * 1% duty cycle is suggested. v in v out adjust r 1 240 1% + 1.0 f c o r l c in r 2 1% to calculate r 2 : v out = i set r 2 + 1.250 v to calculate r 2 : assume i set = 5.25 ma i l i adj i set v ref v o v i 0.1 f v in v out v out = 10 v r l c in 0.1 f adjust r 1 240 1% d 1 * 1n4002 c o + 1.0 f 24 v 14 v r 2 1.65 k 1% c adj 10 f + *d 1 discharges c adj if output is shorted to ground. f = 120 hz LM317 LM317 v o (min load)
LM317, ncv317 http://onsemi.com 5 figure 7. load regulation figure 8. current limit figure 9. adjustment pin current figure 10. dropout voltage figure 11. temperature stability figure 12. minimum operating current ? v out , output voltage change (%) v in = 15 v v out = 10 v i out , output current (a) , adjustment pin current ( a) adj ? i , input-output voltage in out v-v ref v , reference voltage (v) i b , quiescent current (ma) differential (vdc) 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 4.0 3.0 2.0 1.0 0 70 65 60 55 50 45 40 35 3.0 2.5 2.0 1.5 1.0 1.26 1.25 1.24 1.23 1.22 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( ? c) 010203040 v in -v out , input-output voltage differential (vdc) -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( ? c) -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( ? c) -50 -25 0 25 50 75 100 125 150 t j , junction temperature ( ? c) 010203040 v in -v out , input-output voltage differential (vdc) 1.0 a +150 ? c i l = 0.5 a i l = 1.5 a -55 ? c 150 ? c t j = 25 ? c v out = 100 mv i l = 1.5 a 500 ma 200 ma 20 ma +25 ? c t j = -55 ? c
LM317, ncv317 http://onsemi.com 6 ? v voltage deviation (v) out , output figure 13. ripple rejection versus output voltage figure 14. ripple rejection versus output current figure 15. ripple rejection versus frequency figure 16. output impedance figure 17. line transient response figure 18. load transient response v votlage change (v) ? in ? v voltage deviation (v) out , input , output c l = 1.0 f; c adj = 10 f v in i current (a) l , load c l = 1.0 f; c adj = 10 f i l rr, ripple rejection (db) v in - v out = 5 v i l = 500 ma f = 120 hz t j = 25 ? c without c adj c adj = 10 f rr, ripple rejection (db) v in = 15 v v out = 10 v f = 120 hz t j = 25 ? c without c adj c adj = 10 f without c adj rr, ripple rejection (db) i l = 500 ma v in = 15 v v out = 10 v t j = 25 ? c c adj = 10 f v in = 15 v v out = 10 v i l = 500 ma t j = 25 ? c c adj = 10 f without c adj z o ? , output impedance () 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 1.0 0.5 0 3.0 2.0 1.0 0 -1.0 -2.0 -3.0 1.5 1.0 0.5 0 100 80 60 40 20 0 120 100 80 60 40 20 0 100 80 60 40 20 0 10 1 10 0 10 -1 10 -2 10 -3 010203040 t, time ( s) 010203040 0 5.0 10 15 20 25 30 35 v out , output voltage (v) 0.01 0.1 1.0 1 0 i o , output current (a) 10 100 1.0 k 10 k 100 k 1.0 m 10 m f, frequency (hz) 10 100 1.0 k 10 k 100 k 1.0 m f, frequency (hz) t, time ( s) v in = 15 v v out = 10 v i nl = 50 ma t j = 25 ? c v out = 10 v i l = 50 ma t j = 25 ? c c l = 0; without c adj c l = 0; without c adj
LM317, ncv317 http://onsemi.com 7 applications information basic circuit operation the LM317 is a 3 ? terminal floating regulator. in operation, the LM317 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 17), and this constant current flows through r 2 to ground. the regulated output voltage is given by: v out v ref 1 r 2 r 1 i adj r 2 since the current from the adjustment terminal (i adj ) represents an error term in the equation, the LM317 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 LM317 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. figure 19. basic circuit configuration + v ref adjust v in v out LM317 r 1 i prog v out r 2 i adj v ref = 1.25 v typical v out load regulation the LM317 is capable of providing extremely good load regulation, but a few precautions are needed to obtain maximum performance. for best performance, the programming resistor (r 1 ) should be connected as close to the regulator as possible to minimize line drops which effectively appear in series with the reference, thereby degrading regulation. the ground end of r 2 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 LM317 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. 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 18 shows the LM317 with the recommended protection diodes for output voltages in excess of 25 v or high capacitance values (c o > 25 f, c adj > 10 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. figure 20. voltage regulator with protection diodes d 1 v in c in 1n4002 LM317 v out r 1 + c o d 2 r 2 c adj 1n4002 adjust
LM317, ncv317 http://onsemi.com 8 figure 21. d 2 pak thermal resistance and maximum power dissipation versus p.c.b. copper length r , thermal resistance ja ? junction\to\air ( c/w) ? 2.0 oz. copper l l ???? ???? ???? ???? ja p d(max) for t a = +50 ? c figure 22. ??laboratory?? power supply with adjustable current limit and output voltage d 6 * 1n4002 v in 32 v to 40 v v in1 LM317 (1) adjust 1 v out1 r sc v in2 v out 2 i out v out in4001 in4001 240 d 5 1n4001 + 1.0 f tantalum 1.0k current limit adjust q 1 2n3822 5.0 k adjust 2 voltage adjust + 10 f d 3 d 4 d 1 1n4001 q 2 2n5640 -10 v output range:0 ? v o ? 25 v output range: 0 ? i o ? 1.5 a * diodes d 1 and d 2 and transistor q 2 are added to * allow adjustment of output voltage to 0 v. * d 6 protects both LM317's during an input short circuit. d 2 1n4001 -10 v 0.1 f LM317 (2)
LM317, ncv317 http://onsemi.com 9 figure 23. adjustable current limiter figure 24. 5.0 v electronic shutdown regulator v ref +25 v v in LM317 v out r 1 1.25 adjust i out d 2 1n4001 2n5640 r 2 100 * to provide current limiting of i o to the system * ground, the source of the fet must be tied to a * negative voltage below - 1.25 v. r 2 ? v ref r 1 = v ss * d 1 1n4001 v o < bv dss + 1.25 v + v ss , i lmin - i dss < i o < 1.5 a. as shown 0 < i o < 1.0 a. v in d 1 * 1n4002 v out 120 adjust 720 + 1.0 f mps2222 1.0 k ttl control LM317 minimum v out = 1.25 v * d 1 protects the device during an input short circuit. i omax + i dss i dds figure 25. slow turn ? on regulator figure 26. current regulator 1.25v r 1 + 10 f v in v out 240 1n4001 LM317 adjust mps2907 r 2 50 k LM317 v in v out r 1 adjust i adj i out 10 ma ? i out ? 1.5 a i out v ref r 1 i adj
LM317, ncv317 http://onsemi.com 10 ordering information device operating temperature range package shipping ? LM317bd2tg t j = ? 40 ? to +125 ? c d 2 pak ? 3 (pb ? free) 50 units / rail LM317bd2tr4g d 2 pak ? 3 (pb ? free) 800 tape & reel LM317btg to ? 220 (pb ? free) 50 units / rail LM317d2tg t j = 0 ? to +125 ? c d 2 pak ? 3 (pb ? free) 50 units / rail LM317d2tr4g d 2 pak ? 3 (pb ? free) 800 tape & reel LM317tg to ? 220 (pb ? free) 50 units / rail ncv317bd2tg* t j = ? 55 ? to +150 ? c d 2 pak ? 3 (pb ? free) 50 units / rail ncv317bd2tr4g* d 2 pak ? 3 (pb ? free) 800 tape & reel ncv317btg* to ? 220 (pb ? free) 50 units / rail ?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 prefix for automotive and other applications requiring unique site and control change requirements; aec ? q100 qualified and ppap capable. to ? 220 t suffix case 221a marking diagrams a = assembly location wl = wafer lot y = year ww = work week g = pb ? free package lm 317t awlywwg nc v317bt awlywwg d 2 pak ? 3 d2t suffix case 936 lm 317bd2t awlywwg lm 317d2t awlywwg nc v317bd2t awlywwg 1 2 3 1 lm 317bt awlywwg 23 123 123 1 2 3 1 2 3
LM317, ncv317 http://onsemi.com 11 package dimensions d 2 pak ? 3 d2t suffix case 936 ? 03 issue d *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* 8.38 5.080 dimensions: millimeters pitch 2x 16.155 1.016 2x 10.49 3.504 5 ref 5 ref v u terminal 4 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inches. 3. tab contour optional within dimensions a and k. 4. dimensions u and v establish a minimum mounting surface for terminal 4. 5. dimensions a and b do not include mold flash or gate protrusions. mold flash and gate protrusions not to exceed 0.025 (0.635) maximum. 6. single gauge design will be shipped after fpcn expiration in october 2011. dim a min max min max millimeters 0.386 0.403 9.804 10.236 inches b 0.356 0.368 9.042 9.347 c 0.170 0.180 4.318 4.572 d 0.026 0.036 0.660 0.914 e 0.045 0.055 1.143 1.397 f 0.051 ref 1.295 ref g 0.100 bsc 2.540 bsc h 0.539 0.579 13.691 14.707 j 0.125 max 3.175 max k 0.050 ref 1.270 ref l 0.000 0.010 0.000 0.254 m 0.088 0.102 2.235 2.591 n 0.018 0.026 0.457 0.660 p 0.058 0.078 1.473 1.981 r s 0.116 ref 2.946 ref u 0.200 min 5.080 min v 0.250 min 6.350 min a 12 3 k f b j s h d m 0.010 (0.254) t e optional chamfer bottom view optional constructions top view side view dual gauge bottom view l t p r detail c seating plane 2x g n m construction d c detail c e optional chamfer side view single gauge construction s c detail c t t d e 0.018 0.026 0.457 0.660 s
LM317, ncv317 http://onsemi.com 12 package dimensions to ? 220, single gauge t suffix case 221ab issue a notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inches. 3. dimension z defines a zone where all body and lead irregularities are allowed. 4. product shipped prior to 2008 had dimensions s = 0.045 - 0.055 inches (1.143 - 1.397 mm) dim min max min max millimeters inches a 0.570 0.620 14.48 15.75 b 0.380 0.405 9.66 10.28 c 0.160 0.190 4.07 4.82 d 0.025 0.035 0.64 0.88 f 0.142 0.147 3.61 3.73 g 0.095 0.105 2.42 2.66 h 0.110 0.155 2.80 3.93 j 0.018 0.025 0.46 0.64 k 0.500 0.562 12.70 14.27 l 0.045 0.060 1.15 1.52 n 0.190 0.210 4.83 5.33 q 0.100 0.120 2.54 3.04 r 0.080 0.110 2.04 2.79 s 0.020 0.024 0.508 0.61 t 0.235 0.255 5.97 6.47 u 0.000 0.050 0.00 1.27 v 0.045 --- 1.15 --- z --- 0.080 --- 2.04 b q h z l v g n a k f 123 4 d seating plane ? t ? c s t u r j on semiconductor and are registered trademarks of semiconductor co mponents industries, llc (scillc). scillc owns the rights to a numb er of patents, trademarks, copyrights, trade secrets, and other intellectual property. a list ing of scillc?s product/patent coverage may be accessed at ww w.onsemi.com/site/pdf/patent ? marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including without 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 applications and actual performance may vary over time. all operating parame ters, 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 right s of others. scillc products are not designed, intended, or a uthorized 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 whic h the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or us e scillc products for any such unintended or unauthorized appli cation, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unin tended or unauthorized use, even if such claim alleges that scil lc 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 copyrig ht laws and is not for resale in any manner. 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 ? 5817 ? 1050 LM317/d 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

▲Up To Search▲

Price & Availability of LM317

	To Download LM317 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .