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IC901 3842
VCC
GND
O/P
Ct/Rt
Is
COMP.
F.B
Vref
8
2
1
3
4
6
5
7
U.V.L.O.
36V
1V
1/2 Vref
OSCILLATOR
LATCH
PWM
S
R
COMP
C.S.
1/3
AMP
ERR
LOGLC
RESET
SET/
Vref
5V
BIAS
INTERNAL
7
DIFFERENTIAL
INPUT
STAGE
THERMAL AND
SOAR
PROTECTION
VERTICAL
OUTPUT
FLYBACK
GENERATOR
REFERENCE
CIRCUIT
TDA486
3
5
4
6
1
2
3
INP
V
P1
V
P3
or V
FB
V
P2
Substrate V
N
V-OUT
INN
IC601 TDA4863A
ViewSonic Corporation
Confidential – Do Not Copy
E70f-5_E70fB-5_E70fSB-5
96