FA5540 Fuji Electric holdings CO.,Ltd, FA5540 Datasheet - Page 6

• Manufacturer Part Number: FA5540
• Description: Fuji Switching Power Supply Control Ic
• Manufacturer: Fuji Electric holdings CO.,Ltd

Rev.0 July-2007
5. Pin assignment
Pin number
FA5542
1
2
3
4
5
6
7
8
ZCD
（１）
（３）
（２）
FB
IS
5V
5V
Pin name
ZCD
FB
IS
GND
OUT
VCC
NC
VH
50uA
detection
Valley
Overload
1/2
3.3V
Reset
1V
0.34V
Disable
Time out
(5.6µs)
Max. fsw
Blanking
Zero current detection input
Feed-back input
Current sense input
Ground
Output
Power supply
High voltage input
Soft start
comparator
(1ms)
Current
120kHz
FA5540/5541/5542
S
R
Timer
200ms
Q
Reset
CLR
(380ns)
Function of pin
1 shot
5V Reg.
Check
6
VCC
ZCD
7.2V
28V
5V Reg.
Internal
supply
OVP 2
OVP 1
management
12.4V/10.2V
Start up
Logic
10.2V/9V
UVLO
Fuji Electric Device Technology
(54µs)
Timer
latch
Start up
Current
Driver
（８）
OUT
GND
VH
VCC
（６）
（５）
（４）