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KA3S0880RB Scheda tecnica(PDF) 1 Page - Fairchild Semiconductor |
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KA3S0880RB Scheda tecnica(HTML) 1 Page - Fairchild Semiconductor |
1 / 14 page ©2001 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.1 Features • Wide operating frequency range up to 150KHz • Pulse by pulse over current limiting • Over current protection • Over voltage protection (Min. 23V) • Internal thermal shutdown function • Under voltage lockout • Internal high voltage sense FET • External sync terminal • 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 Control- ler IC. 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 volt- age protection, temperature compensated precision current sources for loop compensation and fault protection circuit. Compared to discrete MOSFET and controller or RCC switch- ing 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 design in C-TV power supply. TO-3PF-5L 1. DRAIN 2. GND 3. VCC 4. FB 5. Sync TO-3P-5L 1 1 Internal Block Diagram #3 VCC 32V 2 µA 5V 2.5R 1R 1mA 0.1V + − OVER VOLTAGE S/D + − 7.5V 25V Thermal S/D S R Q Power on reset + − L.E.B S R Q OSC 5V Vref Internal bias Good logic SFET #1 DRAIN #2 GND #4 FB #5 Sync 9V + − 6.4V KA3S0880RB/KA3S0880RFB Fairchild Power Switch(SPS) |
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