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KA5M0965Q-YDTU Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor |
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KA5M0965Q-YDTU Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor |
1 / 14 page ©2001 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.1 Features • Precision fixed operating frequency (70kHz) • Low start-up current(typ. 100uA) • Pulse by pulse current limiting • Over Load protection • Over current protection • Over voltage protecton (Min. 25V) • Internal thermal shutdown function • Under voltage lockout • Internal high voltage sense FET • Latch 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 fre- quency oscillator, under voltage lock-out, leading edge blanking, optimized gate turn-on/turn-off driver, thermal shutdown protection, over voltage protection, and tempera- ture compensated precision current sources for loopcompen- sation 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 reli- ability. It has a basic platform well suited for cost-effective design in either a flyback converter or a forward converter. TO-3P-5L 1. DRAIN 2. GND 3. VCC 4. FB 5. S/S Internal Block Diagram VOF F S E T Sense FET 15V/9V UVLO Vref 2.5R 5uA R 1mA Good Logic INTERNAL BIAS LEB + ++ + - S R Q OSC CLK 7.5V Shutdown Lat ch Power-on Reset /Auto-restart Rsense ※ LEB : Leading Edge Blanking ※ OCL : Over Current Limit Vcc GND Drain + ++ + - 14V 27V + ++ + - OVP-out OVP S R Q 3 2 1 VCC VREF VOLTAGE LIMIT CIRCUIT OLP OCL (VS=1.4V) TSD (TJ=150℃) OVP-out (VCC=27V) VS 5V Soft Start 5 Feedback 4 KA5M0965Q Fairchild Power Switch(SPS) |
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