KA1M0765R

www.fairchildsemi.com KA1M0765R/KA1M0765RC Fairchild Power Switch(FPS) Features Precision fixed operating frequency (67kHz) Pulse by pulse current limiting Over load protection Over voltage protecton (Min. 23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto restart Soft start Description The Fairchild Power Switch(FPS) product family is specially designed for an off line SMPS with minimal external components. The Fairchild Power Switch(FPS) consist of high voltage power SenseFET and current mode PWM controller IC. PWM controller features integrated fixed frequency oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shutdown protection, over voltage protection, temperature compensated precision current sources for loop compensation and fault protection circuit. compared to discrete MOSFET and PWM controller or RCC solution, a Fairchild Power Switch(FPS) can reduce total component count, design size, weight and at the same time increase efficiency, productivity, and system reliability. It has a basic platform well suited for cost effective design in either a flyback converter or a forward converter. TO-3P-5L TO-220-5L 1 1 1. DRAIN 2. GND 3. Vcc 4. FB 5. S/S Internal Block Diagram #3 VCC 32V 5V Vref Good logic #5 Soft Start 5V OSC S R #4 FB 5µA − 1mA 2.5R 1R 9V + 7.5V − + 25V − Thermal S/D OVER VOLTAGE S/D + L.E.B 0.1V S R Q #2 GND Q Internal bias #1 DRAI...