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KA5Q0740RTTU Arkusz danych(PDF) 1 Page - Fairchild Semiconductor |
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KA5Q0740RTTU Arkusz danych(HTML) 1 Page - Fairchild Semiconductor |
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1 / 12 page  ©2003 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.4 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 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) consists of a high voltage power SenseFET and a current mode PWM IC. The integrated PWM controller includes the fixed oscillator, the under voltage lock out, the leading edge blanking, the optimized gate turn-on/turn-off driver, the thermal shut down protection, the over voltage protection, and the temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and a controller or a RCC switching converter solutions, a Fairchild Power Switch(FPS) can reduce the total number of components, design size, and weight, so it will improve efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective design in a quasi-resonant converter as a C-TV power supply. TO-220F-5L 1. Drain 2. GND 3. VCC 4. Feedback 5. Sync Internal Block Diagram - + Rsense 11V on 12V off 3 1 2 4 VREF Internal BIAS S Q R LEB 450ns S QB R Ro n Rof f Power on Reset OVP OLP 7.5V - + 12V Sync - + - + UVLO 15V/9V 5 Burst Mode 3.5V/1.25V SYNC SYNC SYNC SYNC - + R 2.5R - + - + Offset Thermal Thermal Thermal Thermal Shut Down Shut Down Shut Down Shut Down S Q R Power on Reset (VCC=6.5V) Delay 80ns 1V - + OCL 1V FEEDBACK FEEDBACK FEEDBACK FEEDBACK VCC VCC VCC VCC DRAIN DRAIN DRAIN DRAIN SOURCE SOURCE SOURCE SOURCE Normal Mode 4.6V/2.6V OSC - + - + Idelay Ifb VREF 32V 1% + - Ron Roff KA5Q0740RT Fairchild Power Switch(FPS) |
Podobny numer części - KA5Q0740RTTU |
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Podobny opis - KA5Q0740RTTU |
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