KA5Q1265RT

Preliminary KA5Q1265RT S P S 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 oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on/turnoff 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 SPS 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 QuasiResonant Converter as C-TV power supply. TO -22 0F -5L S P S 1. Drain 2. GND 3. VCC 4. FB 5. Sync FEATURES Quasi Resonant Converter Controller Internal Burst mode Controller for Stand-by mode Pulse by pulse current limiting Over current Latch protection Over voltage protection (Vsync: Min. 11V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto-restart mode ORDERING INFORMATION Device KA5Q1265RT Package TO-220F-5L Topr (°C) −25°C to +85°C BLOCK DIAGRAM
+ – Sync. REF. PSR REF. Burst mode controller Internal Bias Vref – + UVLO 3 1 – + 5 OSC S R _ Q Ron OVP LEB Roff PWM 4 1.7R Ifb R – + Vfb offset Ids + Vds RE...