BL317 HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR BL317 DESCRIPTION The B L3 17 is an ad ju stab le 3 -termina l po sitive voltage regu la to r, de signed to sup p ly 1A o f ou tpu t cu rren t with vo ltag e ad ju stab le fro m 1.3V ~ 35V. FEATURES T ypica l 1% Ou tpu t Vo lta ge T o le ran ce Outpu t vo lta ge ad ju sta ble fro m 1. 3V ~35V Outpu t cu rren t in exc ess o f 1A In te rn al sho rt c irc u it p rotec tion In te rn al o ve r te mp eratu re pro tec tio n Outpu t tran sisto r sa fe a rea c o mp en sa tion P in No. 1 2 3 S ymb o l Adj. Vout Vin Defin ition Adju stab le Outpu t Inp ut APPLICATIONS P C Moth erboa rd LCD M on ito r Graph ic Ca rd DVD P la yer Netwo rk In terfa ce Ca rd /S witch Teleco m E qu ip men t P rin te r and o th er P erip hera l Eq u ip men t Page1 www.belling.com.cn V1.0 BL317 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Ta =25°C ) * Charac te ristic S ymb o l Max. Unit Vin -V ou t 37 V P ower Dissipa tion Pd In te rn al limite d Max imu m jun c tion te mpera tu re TJ 150 °C Storag e te mp erature TS 150 °C TLEAD 260 °C ESD 4000 V Inp ut - Ou tpu t Vo ltag e Diffe re nce Le ad te mpe ra tu re (so ld erin g, 10 sec ) ESD (h u man bod y mod el) Min . -40 *: A bso lu te ma ximu m ratin gs a re stre ss ra ting s o nl y and func tio na l d e vice op era tion is not imp lied . Th e d e vic e c ou ld be da mag ed be yo nd Abso lu te ma x imu m ra ting s. Page2 www.belling.com.cn V1.0 BL317 ELECTRICAL CHARACTERISTICS (VIN -VOUT=5V, IOUT=1 0 mA, T a=25°C , unless o the rwise spe cifie d. ) * Charac te ristics Test cond itio ns S ymb o l Min . Typ . Max. Unit 1.20 1.25 1.30 V Refe re nc e voltage 10 mA ≤ I O U T ≤1A 3V≤ (V I N -V O U T ) ≤37V P D≦ 20W VREF Lin e reg u la tion 3V≦ V IN -VOUT≦ 3 7V SV 0.01 0.04 %/V Lo ad re gu la tio n 0 mA≦ IOUT≦ 1A Si 0.2 0.4 % Iad j 50 100 µA Δ Iad j 0.2 5.0 µA ILmin 3.5 10.0 mA Adju st p in c urre n t Adju st p in cu rren t chan ge 3V≦ V IN -VOUT≦ 3 7V, 10 mA ≦ IOUT ≦ 1A, P D ≦ 20W Min imu m curre n t VIN -VOUT=37V load Ripp le re je c tion f=120H z,COUT=1µ F ta nta lu m, (V I N -V O U T )=3V, I O U T = 1A Te mp era ture stab ility TM IN≦ TJ ≦ TMAX RMS ou tp u t no ise (% o f V O U T ) Ta=25℃ , 1 0Hz≤ f ≤10k Hz Therma l resistan ce , Junction to c ase Therma l resistan ce , Junction to Amb ien t SOT-223 TO -25 2 TO -22 0 TO -26 3 SOT-223 TO -25 2 TO -22 0 TO -26 3 Therma l shu tdo wn h yste resis RR en θJC θJA Th ys 60 75 dB 0.7 % 0.00 3 % 23 12 5 5 165 112 54 64 ℃ /W ℃ /W ℃ 25 *: Ma ximu m P o we r D issipa tion is P acka ge T ype and Case T e mpe ra tu re dep end en t. Page3 www.belling.com.cn V1.0 BL317 APPLICATION CIRCUIT Page4 www.belling.com.cn V1.0 BL317 CHARACTERISTICS CURVES Page5 www.belling.com.cn V1.0 BL317 OUTLINE DRAWING SOT-223 Un it:mm TO -22 0 Un it:mm Page6 www.belling.com.cn V1.0 BL317 TO -25 2 Un it:mm TO -26 3 Un it:mm Page7 www.belling.com.cn V1.0