Read Sony TA-SA500WR / TA-SA600WR / TA-SA700WR Service Manual online
TA-SA500WR/SA600WR/SA700WR
17
• IC Block Diagrams
IC101 RT8295ALZSP (WLK6-MAIN BOARD (3/3)) (except SA600WR)
Internal
Regulator
Shutdown
Comparator
Lockout
Comparator
UV
Comparator
Foldback
Control
1.2V
5k
3V
2.7V
Vcc
ȝ$
0.8V
0.4V
9$ Vcc
Oscillator
Slope Comp
9$
Pȍ
S
R
Q
Q
Pȍ
Current Sense
$PSOLILHU
Current
Comparator
+
-
+
-
+
-
+
-
+
-
1
BOOT
2
VIN
8
SS
7
EN
3
SW
4
GND
6 COMP
5 FB
5 FB
+
+
-
($
IC121 MM1839A33NRE (WLK6-MAIN BOARD (3/3)) (except SA600WR)
IC131, IC141 S-1170B33UC-OTSTFG (WLK6-MAIN BOARD (3/3)) (except SA600WR)
VOUT
4
CONT 1
GND 2
NC 3
VIN
5
+
–
VOLTAGE
REFERENCE
REGULATOR
CURRENT
LIMIT
THERMAL
SHUTDOWN
BIAS
VOUT
VIN
5
ON/OFF
4
1
VSS 2
NC 3
+
–
–
OVERCURRENT
PROTECTION
THERMAL
SHUTDOWN
REFERENCE
VOLTAGE
ON/OFF
CONTROL
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