3S0765R Datasheet | Fairchild Semiconductor

.fairchildsemi. .. KA3S0765R/KA3S0765RF Fairchild Power Switch(SPS) Features - - - - - - - - - Wide operatimg frequency range up to (150k Hz) Pulse by pulse over current limiting Over load protection Over voltage protecton (Min. 23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET External sync terminal Auto Restart Mode Description The SPS product family is specially designed for an offline SMPS with minimal external ponents. The SPS consist of high voltage power Sense FET and current mode PWM IC. Included control IC Features a trimmed oscillator, under voltage lock-out, leading edge blanking, optimized gate turnon/turn-off driver, thermal shut down protection, over voltage protection, temperature pensated precision current sources for loop pensation and fault protection circuit. pared to discrete MOSFET and controller or RCC switching converter solution, a SPS can reduce total ponent count, design size, weight and at the same time increase & efficiency, productivity, and system reliabilit. It has a basic platform well suited for cost-effective C-TV power supply. TO-3P-5L TO-3PF-5L 1. DRAIN 2. GND 3. Vcc 4. FB 5. Sync Internal Block Diagram #3 VCC 32V 5V Vref - 5V + 6.4V #4 FB - 1m A 2.5R 1R 9V + 7.5V - + 25V - Thermal S/D OVER VOLTAGE S/D + 0.1V S R Q #2 GND OSC S R 2µA L.E.B Q Good logic Internal bias #1 DRAIN SFET #5 Sync Power on reset Rev.1.0.1 ©2001 Fairchild Semiconductor Corporation KA3S0765R/KA3S0765RF...