KA5M0765RQC

www.fairchildsemi.com KA5M0765RQC Fairchild Power Switch(SPS) Features Precision fixed operating frequency (70KHz) Low start-up current (Typ. 100µA) Pulse by pulse current limiting Over load protection Over current protection Over voltage protection (Min. 25V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto-restart mode Description The SPS product family is specially designed for an off-line SMPS with minimal external components. The SPS consist of high voltage power SenseFET and current mode PWM IC. Included 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, and temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to discrete MOSFET and PWM controller or RCC solution, a SPS 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-220-5L 1 1. DRAIN 2. GND 3. VCC 4. FB 5. S/S Internal Block Diagram Vcc 3 + 27V Drain 1 UVLO INTERNAL BIAS Good Logic CLK OVP OVP-out V CC V REF 5uA 15V/9V 1mA - Vref VOLTAG E Sense LIMIT CIRCUIT FET OSC Feedback 4 Soft Start 5 + 7.5V 5V OLP 1 4V 2.5R S + LEB R Q R ...