TIGER ELECTRONIC CO.,LTD HIGH CURRENT ADJUSTABLE VOLTAGE REGULATOR LM317EMP / T / MDT / S DESCRIPTION The LM317 is an adjustable 3-terminal positive voltage regulator, designed to supply 1A of output current with voltage adjustable from 1.3V ~ 37V. (EMP) (T) FEATURES Typical 1% Output Voltage Tolerance Output voltage adjustable from 1.3V ~ 37V Output current in excess of 1A Internal short circuit protection (MDT) (S) Internal over temp erature protection Output transistor safe area comp ensation APPLICATIONS PC Motherboard LCD Monitor Graphic Card DVD Player Network Interface Card/Switch Telecom Equipment Printer and other Peripheral Equipment 1/7 LM317 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Ta=25 °C) * Characteristic Max. Unit Vin-Vout 40 V Power Dissipation Pd Internal limited Maximu m junction temp erature TJ 150 °C Storage temperature TS 150 °C T LEAD 260 °C ESD 4000 V Input - Output Voltage Difference Lead temperature (soldering, 10sec) ESD (human body model) Symbol Min. -40 *: Absolute maximu m ratings are stress ratings only and functional device operation is not implied. The device could be damaged beyond Absolute maximu m ratings. 2/7 LM317 ELECTRICAL CHARACTERISTICS (VIN-VOUT=5V, IOUT=10mA, Ta=25°C, unless otherwise specified. ) * Characteristics Test conditions Symbol Min. Typ. Max. Unit 1.20 1.25 1.30 V Reference voltage 1 0 mA≤ I O U T ≤1A 3 V≤ (V I N -V O U T ) ≤40V PD≦ 20W V REF Line regulation 3 V≦ VIN-VOUT≦ 40V SV 0.01 0.04 %/V Load regulation 0 mA≦ IOUT≦ 1A Si 0.2 0.4 % Iadj 50 100 µA Δ Iadj 0.2 5.0 µA I Lmin 3.5 10.0 mA Adjust pin current Adjust pin current change 3 V≦ VIN-VOUT≦ 40V, 1 0 mA ≦ I O UT ≦ 1A, PD ≦ 20W Minimu m current VIN-VOUT=40V load Ripple rejection f=120Hz,COUT=1µF tantalum, )=3V, I OUT (V I N -V O U T =1A Te mp erature stability TMIN≦ TJ≦ TMAX RMS ou tput noise (% of V O U T ) Ta=2 5℃ , 10Hz≤ f ≤10kHz Thermal resistance, Junction to case Thermal resistance, Junction to Ambient Thermal shutdown hysteresis SOT-223 TO-252 TO-220 TO-263 SOT-223 TO-252 TO-220 TO-263 RR en θ JC θ JA Thys 60 75 dB 0.7 % 0.003 % 23 12 5 5 165 11 2 54 64 25 ℃ /W ℃ /W ℃ *: Maximum Power Dissipation is Package Type and Case Temperature dependent. 3/7 LM317 APPLICATION CIRCUIT LM 4/7 LM317 CHARACTERISTICS CURVES 5/7 LM317 OUTLINE DRAWING Unit:mm TO-220 Unit:mm LM317 SOT-223 6/7 LM317 TO-252 Unit:mm TO-263 Unit:mm 7/7