FA5604 Datasheet, PDF (5/31 Pages) Fuji Electric – FUJI Power Supply Control IC

5. Block diagram
FA5604/5605/5606
6. Pin assignment
Pin Symbol Function
Description
1
RT Oscillator timing resister
Connected to oscillator timing resistor
2
FB Feedback
Input of PWM comparator OLP
3
IS Overcurrent detection
Input of the overcurrent limiting function ( - )
4
GND Ground
Signal ground of the power IC
5
OUT Output
Output for driving a power MOSFET
6
VCC Power supply
Power supply
7
VF Switching Frequency Control at over load Overload protection
8
CS Soft-start and ON/OFF control
Soft-start, ON/OFF function, OLP-hiccup, and latch-mode
shutdown operations
Note) Power ground PGND (▼) and signal ground GND () are connected through current sensing resistor Rs.
CS VF VCC OUT
8
7
6
5
Fuji Electric Co., Ltd.
AN-033E Rev.1.2
April-2011
1
2
RT FB
3
4
IS GND
5
http://www.fujielectric.co.jp/products/semiconductor/