KA2S0680

SPS KA2S0680 SPS TO-3P-5L The SPS product family is specially designed for an off line SMPS with minimal external component. The SPS consist of high voltage Power SenseFET 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, and temperature compensated precision current source for loop compensation and fault protection circuitry. Compared to discrete MOSFET and controller or RCC switching converter 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 monitor power supply. 1.DRAIN 2. GND 3. VCC 4. FB 5. Sync FEATURES Wide operating frequency range up to 150kHz Pulse by pulse over current limiting Over load protection Over voltage protection (Min. 23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET External sync terminal Latch up Mode ORDERING INFORMATION Device KA2S0680 Package TO-3P-5L Rating 800V, 6A Topr (°C) −25°C to +85°C BLOCK DIAGRAM #3 VCC 32V 5V Vref − 5V + 6.4V #4 FB − 1mA 2.5R 1R 9V + 7.5V − + 25V − Thermal S/D OVER VOLTAGE S/D + OSC S R 2µA L.E.B 0.1V S R Q #2 GND Q Good logic Internal bias #1 DRAIN SFET #5 Sync Power on reset Rev. B 1 © 1999 Fairchild Semiconductor Corporation KA2S068...