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FSCQ Datasheet(PDF) 3 Page - Fairchild Semiconductor

Part No. FSCQ
Description  Green Mode Fairchild Power Switch (FPS)
Download  44 Pages
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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FSCQ Datasheet(HTML) 3 Page - Fairchild Semiconductor

 
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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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