Panasonic PT-CW230E Service Manual page 51

IC Block Diagrams
● FA7701 <DC-DC control, IC5611>
● FA7703 <DC-DC control, IC5631>
1
RT
U V L O
V R E F
VREF
2.2V
2
O S C
REF
BIAS
Power Good Signal
3
IN–
0.88V
+
–
E R . A M P
4
FB
FA7701
ON/OFF
0.3V
–
+
5.5V S.C.P
+
1.5V
–
S.C.DET
2.2V
1.5V
+
–
OFF
ON/OFF
+
–
+
P W M
-51-
8
CS
7
VCC
6
OUT
5
GND