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1、 V1.3 Page1 BL317B HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR BL317B DESCRIPTION The BL317B is an adjustable 3-terminal positive voltage regulator,designed to supply more than 1.5A of output current with voltage adjustable from1.3V 37V.FEATURES?Output current up to 1.5A?Output voltage adjustable from
2、 1.3V to 37V?Internal short circuit protection?Internal over temperature protection?Safe-Area compensation for output transistor APPLICATIONS?PC Motherboard?LCD Monitor?Graphic Card?DVD Player?Network Interface Card/Switch?Telecom Equipment?Printer and other Peripheral Equipment TO-2201TO-2521TO-263
3、11TO-220FSOT-2231 1:ADJ;2:OUTPUT;3:INPUT V1.3 Page2 BL317B ORDERING INFORMATION Device Package S S S Shippinghippinghippinghipping BL317BT TO-220 Tube BL317BF TO-220F Tube BL317BY-B TO-252 2500pcs/Reel BL317BY-T TO-252 80pcs/Tube BL317BK TO-263-2L Reel BL317BS SOT-223 Reel BLOCK DIAGRAM ABSOLUTE MAX
4、IMUM RATINGS(Ta=25C)*Characteristic Symbol Min.Max.Unit Input-Output Voltage Difference Vin-Vout 40 V Power Dissipation Pd Internal limited Operating Temperature Range TOPR 0 125 C Storage temperature TS-65 150 C Lead temperature(soldering,10sec)TLEAD 260 C*:Absolute maximum ratings are stress ratin
5、gs only and functional device operation is not implied.The device could be damaged beyond Absolute maximum ratings.V1.3 Page3 BL317B ELECTRICAL CHARACTERISTICS（VI-VO=5V,0C Tj125C,IO=500mA,IMAX=1.5A,PMAX=20W,unless otherwise specified）Parameter Symbol Test conditions Min Typ Max Unit Line Regulation
6、VO Ta=25C,3VVI-VO40V 0.01 0.04%/V Ta=0-125C,3VVI-VO40V 0.02 0.07 Ta=25C VO6V 18 25 mV Load Regulation VO 10mAIOIMAX VO5V 0.4 0.5%/VO 10mAIOIMAX VO5V 40 70 mV Ta=0-125C VO6V 0.8 1.5%/VO Adjustable Pin current IADJ 46 100 A Adjustable Pin Current Change IADJ 2.5VVI-VO40V,10mAIoIMAX,PDPMAX 2.0 5 A Refe
7、rence Voltage VREF 3VVI-VO40V,10mAIOIMAX,PDPMAX 1.20 1.25 1.30 V Temperature Stability STT 0.7%/VO Minimum Load Current for regulation IL(MIN)VI-VO=40V 3.5 10 mA Maximum output Current IO(MAX)VI-VO15V,PDPMAX 1.5 2.2 A VI-VO40V,PDPMAX,Ta=25C 0.15 0.4 RMS Noise v.s.%of Vout eN TA=25C,10HZf10KHZ 0.003
8、0.01%/VO Ripple Rejection RR VO=10V,f=120HZ,CADJ=0 60 dB VO=10V,f=120HZ,CADJ=10F 66 75 Long-term Stability,TJ=THIGH ST TA=25C,1000 hr 0.3 1%Note:Testing with low duty pulse should be used to avoid heating V1.3 Page4 BL317B THERMAL DATA Parameter Symbol RATING UNITS TO-252 112 TO-220 54 TO-220F 44 TO
9、-263 64 Junction-to-Ambient SOT-223 JA 165/W TO-252 12 TO-220 5 TO-220F 5 TO-263 5 Junction-to-Case SOT-223 JC 23/W APPLICATION CIRCUIT V1.3 Page5 BL317B CHARACTERISTICS CURVES 0255075100125-1.0-0.8-0.6-0.4-0.20.00.2TemperatureOutput Voltage DeviationFig.1.Load Regulation vstemperatureVi=15VVo=10V-5
10、0-250255075100125354045505560Fig.2 Adjustment Current vs TemperatureAdjustment CurrentTemperature02550751001251.01.52.02.53.0Fig.3.Dropout Voltage vs Input-Output Voltage DifferenceTemperatureInput-Output VoltageDifferenceVo=100mVIL=1AIL=500mAIL=200mAIL=20mAIL=1.5A-50-2502550751001251.2351.2401.2451
11、.2501.2551.260Fig.4 Reference Voltage vs TemperatureReference VoltageTemperature V1.3 Page6 BL317B Taping reel dimension：Taping dimension：V1.3 Page7 BL317B PACKAGE DIMENSIONS TO-220 Unit:mm TO-252 Unit:mm V1.3 Page8 BL317B TO-263 Unit:mm V1.3 Page9 BL317B TO-220F Unit:mm V1.3 Page10 BL317B SOT-223 Unit:mm 0106.500.203.000.102.304.600.100.250.300.050.710.01