KA5P0680C

www.fairchildsemi.com KA5P0680C Features Fairchild Power Switch(FPS) 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 IC. Included PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shut down protection, over voltage protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. compared to discrete MOSFET and controller or RCC switching converter solution, a Fairchild Power Switch(FPS) can reduce total component count, design size, and weight and at the same time increase efficiency, productivity, and system reliability.It has a basic platform well suited for cost effective design in PC SMPS with Power Saving function. TO-220-5L Adjustable Switching Frequency Intelligent Power Saving Mode Pulse by Pulse Current Limiting Over Current Latch Protection Over Voltage Protection Internal Thermal Shutdown Function Built-in Soft Start Function Internal High Voltage Sense FET Auto-Restart Mode 1 1. Drain 2. GND 3. VCC 4. FB 5. CT Internal Block Diagram Vcc 3 UVLO Vref 15V/9V 2.5V OSC VCC VREF CLK S 5uA 900uA 2.5R R 0.5V VZ SOFT-START (5mS)/( 0 ~ 5V ) S 2V R Q 1mS VCC PS MODE 5uA LEB R Q VG BIAS GOOD LOGIC VG LIMIT CIRCUIT SenseFET D...