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BL317 Dataheets PDF



Part Number BL317
Manufacturers BELLING
Logo BELLING
Description HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR
Datasheet BL317 DatasheetBL317 Datasheet (PDF)

BL317 HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR BL317 DESCRIPTION The BL317 is an adjustable 3-terminal positive voltage regulator, designed to supply 1A of output current with voltage adjustable from 1.3V ~ 35V. F E AT U R E S Typical 1% Output Voltage Tolerance Output voltage adjustable from 1.3V ~35V Output current in excess of 1A Internal short circuit protection Internal over temperature protection Output transistor safe area compensation A P P L I C AT I O N S PC Motherboard LCD Monitor G.

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BL317 HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR BL317 DESCRIPTION The BL317 is an adjustable 3-terminal positive voltage regulator, designed to supply 1A of output current with voltage adjustable from 1.3V ~ 35V. F E AT U R E S Typical 1% Output Voltage Tolerance Output voltage adjustable from 1.3V ~35V Output current in excess of 1A Internal short circuit protection Internal over temperature protection Output transistor safe area compensation A P P L I C AT I O N S PC Motherboard LCD Monitor Graphic Card DVD Player Network Interface Card/Switch Telecom Equipment Printer and other Peripheral Equipment Pin No. 1 2 3 Symbol Adj. Vout Vin Definition Adjustable Output Input Page1 www.belling.com.cn V1.0 BLOCK DIAGRAM BL317 ABSOLUTE MAXIMUM RATINGS (Ta=25°C) * Characteristic Symbol Min. Max. Unit Input - Output Voltage Difference Vin-Vout 37 V Power Dissipation Pd Internal limited Maximum junction temperature TJ 150 °C Storage temperature Lead temperature (soldering, 10sec) TS -40 150 °C TLEAD 260 °C ESD (human body model) ESD 4000 V *: Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device could be damaged beyond Absolute maximum ratings. Page2 www.belling.com.cn V1.0 BL317 ELECTRICAL CHARACTERISTICS (VIN-VOUT=5V, IOUT=10mA, Ta=25°C, unless otherwise specified. ) * Characteristics Reference voltage Line regulation Test conditions 10mA≤ IOUT ≤1A 3V≤ (VIN-VOUT) ≤37V PD≦ 20W 3V≦ VIN-VOUT≦ 37V Load regulation 0mA≦ IOUT≦ 1A Symbol Min. Typ. Max. Unit VREF 1.20 1.25 1.30 V SV 0.01 0.04 %/V Si 0.2 0.4 % Adjust pin current Iadj 50 100 µA Adjust pin current change Minimum current load Ripple rejection Te m p e r a t u r e stability RMS output noise (% of VOUT) Thermal resistance, Junction to case Thermal resistance, Junction to Ambient Thermal shutdown hysteresis 3V≦ VIN-VOUT≦ 37V, 10mA≦ IOUT≦ 1A, PD≦ 20W VIN-VOUT=37V f=120Hz,COUT=1µ F tantalum, ( V I N -V O U T ) = 3 V, I O U T = 1 A TMIN≦ TJ≦ TMAX Ta=25℃ , 10Hz≤ f ≤10kHz S O T- 2 2 3 TO-252 TO-220 TO-263 S O T- 2 2 3 TO-252 TO-220 TO-263 Δ Iadj ILmin RR en θJC θJA Thys 0.2 5.0 µA 3.5 10.0 mA 60 75 dB 0.7 0.003 23 12 5 5 165 112 54 64 25 % % ℃ /W ℃ /W ℃ *: Maximum Power Dissipation is Package Type and Case Temperature dependent. Page3 www.belling.com.cn V1.0 APPLICATION CIRCUIT BL317 Page4 www.belling.com.cn V1.0 CHARACTERISTICS CURVES BL317 Page5 www.belling.com.cn V1.0 OUTLINE DRAWING S O T- 2 2 3 BL317 Unit:mm TO-220 Unit:mm Page6 www.belling.com.cn V1.0 TO-252 BL317 Unit:mm TO-263 Unit:mm Page7 www.belling.com.cn V1.0 .


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