ST 78L12U 3-Terminal Positive Voltage Regulator Absolute Maximum Ratings (Ta = 25 OC) Parameter Symbol Rating Unit Input Voltage VI 35 V Power Dissipation Ptot 800 Operating Temperature Topr - 20 to + 120 O Ts - 55 to +150 O Storage Temperature Range 1) 1) mW C C 15 mm X 25 mm X 0.7 mm alumina ceramic board, Ta ≤ 25 OC Electrical Characteristics (Ta = 25 OC) (Unless otherwise specified, 0 OC ≤ TJ ≤ 125 OC, VI = 19 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF) Symbol Parameter Output Voltage VO Line Regulation Regline Load Regulation Regload Quiescent Current IQ Test Condition Min. Typ. Max. Unit Tj = 25 OC 11.5 12 12.5 V 14.5 V ≤ VI ≤ 27 V, 1 mA ≤ IO ≤ 40 mA 11.4 - 12.6 V VI = 19 V, 1 mA ≤ IO ≤ 70 mA V 11.4 - 12.6 O 14.5 V ≤ VI ≤ 27 V, Tj = 25 C - - 250 16 V ≤ VI ≤ 27 V, Tj = 25 C - - 200 1 mA ≤ IO ≤ 100 mA, Tj = 25 OC - - 100 1 mA ≤ IO ≤ 40 mA, Tj = 25 C - - 50 Tj = 25 OC - - 6 16 V ≤ VI ≤ 27 V - - 1.5 1 mA ≤ IO ≤ 40 mA - - 0.1 - 80 - µV 37 - - dB - 1.7 - V O O Quiescent Current Change ΔIQ Output Noise Voltage VN 10 Hz ≤ f ≤ 100 KHz, Tj = 25 OC Ripple Rejection RR f = 120 Hz, 15 V ≤ VI ≤ 25 V, Tj = 25 OC Dropout Voltage VDrop Vi Tj = 25 °C 1 3 Vo 78L12U C1 0.33 µF 2 C2 0.1 µF SEMTECH ELECTRONICS LTD. ® (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2006 mV mV mA mA ST 78L12U SOT-89 PACKAGE OUTLINE SEMTECH ELECTRONICS LTD. ® (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) Dated : 21/06/2006