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FSCQ0765RT Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FSCQ0765RT Datasheet(HTML) 3 Page - Fairchild Semiconductor |
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3 / 24 page 
FSCQ0765RT 3 Pin Definitions Pin Configuration Figure 3. Pin Configuration (Top View) Pin Number Pin Name Pin Function Description 1 Drain High voltage power SenseFET drain connection. 2 GND This pin is the control ground and the SenseFET source. 3Vcc This pin is the positive supply input. This pin provides internal operating current for both start-up and steady-state operation. 4Vfb This pin is internally connected to the inverting input of the PWM comparator. The collector of an opto-coupler is typically tied to this pin. For stable operation, a capacitor should be placed between this pin and GND. If the voltage of this pin reaches 7.5V, the over load protection triggers resulting in shutdown of the FPS. 5Sync This pin is internally connected to the sync detect comparator for quasi resonant switching. In normal quasi-resonant operation, the threshold of the sync comparator is 4.6V/2.6V. Meanwhile, the sync threshold is changed to 3.0V/1.8V in extended quasi-resonant operation. 5.Sync 4.Vfb 3.Vcc 2.GND 1.Drain TO-220F-5L |
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