ksd-i0o009-000 1 october, 2010 rev. 00 sn317x [ 1.5 a adjustable output ] positive voltage regulator marking detail information auk logo grade & m code & year & week code device code product marking package sn317pi sn317pi to-220f-3l SN317D2 SN317D2 d2pak description the sn317 is an adjustable 3-terminal positive voltage regulato r 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 ar ea compensation, making it essentially blow-out proof. this device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjust ment and output, the sn317 can be used as a precision current regulator. application ? consumer and personal electronics ? smps post-regulator / dc-to-dc modules ? high-efficiency linear power supplies ? led light constant current controllers features and benefits ? output current up to 1.5a ? output adjustable level : 1.2v to 37v ? built in ovp, clp circuit. ? built in tsd protection. ? output transistor safe area protection. ? ultra high level of esd [ built in esd protection cell ] s s e e m m i i c c o o n n d d u u c c t t o o r r http:// www.auk.co.kr ordering information to-220f-3l d2pak auk( ) g yww ( ) sn317pi ( ) equivalent circuit r limit voltage reference ovp / ocp / esd protection circuitry vout(2) adj(1) + ? vin(3)
ksd-i0o009-000 2 october, 2010 rev. 00 ? pin configuration ? standard application d2pak 1: adj. 2: v out 3: v in 4: v out 2 1 3 4 1 2 3 to-220f-3l 1: adj. 2: v out 3: v in sn317x ci is required if regulator is located an appreciable distance from power supply filter. co is not needed for stability, however, it is necessary to improve transient response. since i adj is controlled to less than 0.1ma, the error associated with this term is insignificant in most applications. v out = v ref(1.25v) ( 1+r 2 /r 1 )+i adj r 2
ksd-i0o009-000 3 october, 2010 rev. 00 parameter symbol limits unit to-220f-3l d2pak input-output voltage differential v i -v o 40 v power dissipation d2pak p d internally limited w to-220f-3l thermal resistance junction to case r jc 5.0 5.0 ? c/w thermal resistance junction to air r ja 65 72 ? c/w junction temperature t j 150 operate temperature range t opr 0 ~ +125 storage temperature range t stg -55 ~ +150 stresses exceeding maximum ratings may damage the device. maximum ratings ar e stress ratings only. functional operation above the recommended operating conditions is not implied. extended exposure to stresses above the recommended operating c onditions may affect device reliability. the maximum allowable power dissipation is a f unction of the maximum junction temperature, t j(max) , the junction-to-ambient thermal resistance, ja , and the ambient temperature, ta. the maximum allowable power dissipation at any ambient temperature is calculated using: pd(max) = (t j(max) ? t a ) ja . exceeding the maximum allowable power dissipation will result in excessive die temperature, and the re gulator will go into thermal shutdown. ? absolute maximum ratin g s ( ta = 25 ) sn317x
ksd-i0o009-000 4 october, 2010 rev. 00 ( v i -v o =5v, i o = 0.5a, i max = 1.5a, t j =0 ~125 , p dmax =20w ; unless otherwise specified ) characteristic symbol test condition* sn317x unit min. typ. max. line regulation * ? v o(line) 3.0v v i -v o 40v i o =10ma t a =+25 - 0.01 0.04 % / v 3.0v v i -v o 40v i o =10ma t a =0~+125 - 0.02 0.07 load regulation * ? v o(load) 10ma i o i max t a =+25 v o < 5v v o 5v - 18.0 0.4 25.0 0.5 mv % / v o 10ma i o i max t a =0~+125 v o < 5v v o 5v - 40.0 0.8 70.0 1.5 mv % / v o adjustable pin current i adj - - 50 100 ua adjustable pin current change ? i adj 3.0v v i -v o 40v 10ma i o i max , p d p dmax - 2.0 5.0 ua reference voltage v ref 3.0v v i -v o 40v 10ma i o i max , p d p dmax 1.20 1.25 1.30 v temperature stability st t 0 t j 125 - 1.0 - % / v o ripple rejection rr v o =10v, f=120hz without c adj - 65.0 - ? v o =10v, f=120hz, c adj = 10uf ** - 75.0 - output noise voltage v no 10hz f 100khz t a =25 - 0.003 - % minimum load current to maintain regulation i l(min) v i -v o = 40v - 3.5 12.0 ma maximum output current i o(max) v i -v o 15v, p d p dmax t a =25 1.0 2.2 - a v i -v o 40v, p d p dmax - 0.3 - long-term stability st t a = +25 for end point measurements, 1000hr - 0.3 1.0 % * load and line regulation are specified at constant temperature. change in v o due to heating effects must be taken into account separately . pulse testing with low duty cycle is used. ** c adj is connected between the adjustable pin and ground. ? electrical characteristics sn317x
ksd-i0o009-000 5 october, 2010 rev. 00 fig.3 output voltage vs. junction temperature fig.4 dropout voltage vs. input voltage fig.5 line transient response fig.6 load transient response fig.1 adjustable pin current vs. junction temperature fig.2 load regulation sn317x 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 output voltage deviation [%] -40 0 25 50 75 100 125 junction temperature [ ] 60 50 40 30 20 10 0.0 adjustable pin current [ua] v in =4.25v v out =1.25v i out =100ma 1.27 1.26 1.25 1.24 1.23 junction temperature [ ] reference voltage [v] -40 0 25 50 75 100 125 150 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 dropout voltage [v] junction temperature [ ] io=1.5a io=0.5a v o =100mv 50 0.0 -50 output voltage deviation [mv] time [us] 0 20 40 60 80 100 120 140 20v 15v 1.5a 0a 100 0 -100 output voltage deviation [mv] 0 20 40 60 80 100 120 140 time [us] input voltage load current output voltage deviation output voltage deviation c in =0.1uf, c out =1.0uf iout=100ma, ta=25 fixed 10v fixed 10v c in =0.1uf, c out =1.0uf v in =15v, ta=25 -40 0 25 50 75 100 125 150 junction temperature [ ] -40 0 25 50 75 100 125 150 io=0.5a io=1.5a v in =15v v out =10v
ksd-i0o009-000 6 october, 2010 rev. 00 ? d2pak outline dimension (unit : mm) recommend pcb solder land [unit: mm] sn317x
ksd-i0o009-000 7 october, 2010 rev. 00 ? to-220f-3l outline dimension (unit : mm) sn317x
ksd-i0o009-000 8 october, 2010 rev. 00 the auk corp. products are intended for the use as components in general electronic equipment (office and communication e quipment, measuring equipment, home appliance, etc.). please make sure that you consult with us before you use these auk corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion control, all types of safet y device, etc.). auk corp. cannot accept liability to any damage which may occur in case these auk corp. products were used in the mentioned equi pments without prior consultation with auk corp.. specifications mentioned in this publicati on are subject to change without notice. sn317x
|
