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FSCQ1565RP Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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FSCQ1565RP Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 44 page FSCQ-SERIES 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, which results in the FPS shutting down. 5 Sync 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. Whereas, the sync threshold is changed to 3.0V/1.8V in an extended quasi-resonant operation. 5.Sync 4.Vfb 3.Vcc 2.GND 1.Drain TO-220F-5L 5.Sync 4.Vfb 3.Vcc 2.GND 1.Drain TO-3PF-7L |
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