ST 78L12 3-Terminal positive voltage regulator 12V • Suitable for TTL, DTL, HTL, C-MOS, Power Supply • Internal Short-Circuit Current Limiting • Internal Thermal Overload Protection • Maximum Output Current of 150mA (Tj=25oC) •Available in the Plastic TO-92 Package TO-92 Plastic Package Weight approx. 0.19g Absolute Maximum Ratings (Ta = 25 oC) Symbol Rating Unit Input Voltage VIN 35 V Power Dissipation Ptot 800 mW Operating Temperature Topr -30~75 °C Ts -55~150 °C Storage Temperature Range SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002 ST 78L12 Electrical Characteristics (Unless otherwise specified, VIN=19V, IOUT=40mA, CIN=0.33μF, COUT=0.1μF, Tj=25°C) Symbol Output Voltage Test Condition Min. Typ. Max. Uunit 11.5 12 12.5 V 14.5V≤VIN≤27V - 120 250 mV 16V≤VIN≤27V - 100 200 1.0mA≤IOUT≤100mA - 20 100 1.0mA≤IOUT≤40mA - 10 50 11.4 - 12.6 V 11.4 - 12.6 V - 3.2 6.5 mA 16V≤VIN≤27V - - 1.5 mA 1.0mA≤IOUT≤40mA - - 0.1 Ta=25°C, - 80 - μV 36 41 - dB Tj=25°C - 1.7 - V IOUT=5mA - 1 - mV/°C VOUT Input Regulation Reg. line Load Regulation Reg. load Output Voltage VOUT 14.5V≤VIN≤27V mV 1.0mA≤IOUT≤40mA VOUT VIN=19V 1.0mA≤IOUT≤70mA Quiescent Current Quiescent IB With line ΔIB Current Change With load Output Noise Voltage VNO 10Hz≤f≤100KHz Ripple Rejection RR f=120Hz, 15V≤VIN≤25V,Tj=25°C ⎢VIN-VOUT ⎢ Dropout Voltage Average Temperature TCVO Coefficient of Output Voltage SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002