Sony BC-1WD Service Manual page 23

—TOP VIEW—
UN2111
(R1=10k,R2=10k)
R1
R2
—TOP VIEW—
UN2211
(R1=10k,R2=10k)
UN2224-TW
(R1=2.2k,R2=10k)
R1
R2
TYPE NO.
PRINTED.
UN4111
(R1=10k,R2=10k)
UN4123
(R1=10k,R2=10k)
R1
R2
BC-1WD
[|OTHERS|]
—TOP VIEW—
PC111
1
6(NC)
PC111YS
(NC)3
4
[|IC|]
BA10358F-E2 (ROHM)
TA75W01FU (TOSHIBA)
UPC358G2
DUAL OPERATIONAL AMPLIFIERS
(SINGLE-SUPPLY TYPE)
—TOP VIEW—
1 V 8
CC
_ +
2 7
+ _
3 6
V
4 EE 5
FA5311P (FUJI ELECT)
PWM SWITCHING MODE POWER SUPPLY CONTROLLER
—TOP VIEW—
RT 1 8 CS
FB 2 7 CT
IS (+) 3 6 V
CC
GND 4 5 OUT
INPUTS
CS : SOFT START ON/OFF CONTROL
CT : GENERATOR TIMING CONDENSOR
IS (+) : SOURCE CURRENT INPUT AT OVER-CURRENT DETECTION
RT : GENERATOR TIMING RESISTOR
OUTPUTS
FB : FEEDBACK
OUT : DRIVE
1
RT
OSC
7
CT
8
CS
Zn
_
3.6 V
+
2.8 V
+
_
_
_
Dmax
(46%, 70%) PWM
2
COMPARATOR
FB
3
+
IS (+)
_
0.24 V OVER-CURRENT
PROTECTION
Transistor, Others, IC
UNDER VOLTAGE
LOCKOUT
+
BIAS
7.0 V
_
OFF OFF
+
_
F.F
R O
S
NOTE
FA5310 : Dmax = 46%
FA5311 : Dmax = 70%
5-3
IC
5
OUT