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KA5x02xx-SERIES

KA5H0265RC, KA5M0265R, KA5L0265R, KA5H02659RN/KA5M02659RN, KA5H0280R, KA5M0280R Fairchild Power Switch(FPS)
Features
Precision Fixed Operating Frequency (100/67/50kHz) Low Start-up Current (Typ. 100uA) Pulse by Pulse Current Limiting Over Load Protection Over Voltage Protection (Min. 25V) Internal Thermal Shutdown Function Under Voltage Lockout Internal High Voltage Sense FET Auto-Restart Mode

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 circuitrycompared to discrete MOSFET and controller or RCC switching converter solution. The Fairchild Power Switch(FPS) 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 either a flyback converter or a forward converter.
TO-220F-4L 8-DIP TO220-5L

1 1 1. GND 2. Drain 3. Vcc 4. FB 1.6.7.8. Drain 2. GND 3. Vcc 4. FB 5. NC 1 1. Drain 2. GND 3. Vcc 4. FB 5. S/S

Internal Block Diagram
VCC 32V 5V Vref Good logic Internal bias DRAIN SFET

Soft Start
5V
uA

OSC S R Q - 5 A 1mA 2.5R 1R 9V 7.5V - 27V - Thermal S/D OVER VOLTAGE S/D 0.1V S R Q GND

FB

L.E.B

Power on reset

KA5H0265RC

Rev.1.0.4
2003 Fairchild Semiconductor Corporation

KA5M0280R Datasheet Fairchild Download PDF

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KA5M0280R DATASHEET