FA5640 Datasheet, PDF (6/35 Pages) Fuji Electric – Fuji Switching Power Supply Control IC

FA5640/41/42
FA5642
ZCD
ZCD
Bottom
detection
Bottom Skip
control
7.5V _30k
Pulse width
detection
Restart Timer
25μs
1 shot
(290ns)
set
enb
4.8V
MP1
Off timer
(2μs)
Resistance ratio
MP1 on/off
24k
91.3%/100%
4.8V
10μA
- ^Disable
+
VthFB0
0.45V
IS
Current
comparator
FB
1/6
Reset
Max. Ton
(24μs)
SQ
R2
R1
Standby
0.55V
Standby
detection
Soft start
(1ms)
Overload
3.5/3.3V
VthIS VthIS at Standby
0.5V 0.15V
Timer
enb
200ms
1600ms
OLP
protection
Reset
VH
Startup
management
11V/9V
Startup
Current
UVLO
VCC
10V/8V
4.8V Reg.
Internal
supply
enb
Driver
OUT
Off timer
(4.5μs)
ZCD
OVP
detection
OVP1
Latch
protection
6V
Latch timer
60μs
GND
Fuji Electric Co., Ltd.
AN-064E Rev.1.1
April 2011
6
http://www.fujielectric.co.jp/products/semiconductor/