Panasonic HDC-Z10000E, Service Manual

Page: 54 / 119

54
13 Others
13.1. Description of Major ICs (1)
IC4703 IC4706
C0JBAR000432
Signal Selector IC
IC4708
C0DBGYY01912
REGULATOR
CURRENT
LIMIT
VIN
3
VOUT
1
VSS
2
+
-
RA
RB
VOLTAGE
REFERENCE
Pin Label I/O Description
1 VOUT O Regulated voltage output
2 VSS - Ground
3 VIN I Supply voltage input
IC4701 IC4702 IC4704 IC4705 IC4806
C0ABBB000220
COMPARATOR
1
2
3
4
8
7
6
5
+
A
+
B
A OUTPUT
A -INPUT
A +INPUT
B +INPUT
B -INPUT
B OUTPUT
V -
V +
-
-
IC4801 IC4802 IC4803 IC4804 IC4805
C0ABBB000369
COMPARATOR
1
2
3
4
8
7
6
5
+ -
A
+ -
A OUTPUT
A -INPUT
A +INPUT
B +INPUT
B -INPUT
B OUTPUT
V -
V +
IC903
C1ZBZ0004521
CHANGE PUMP CONTROLLER
5
CTRL_B
VIN
GND
6
3
2
VSN
1
VSP
11
C3N
12
C3P
10
C2P
9
C2N
8
C1P
7
C1N
4
CTRL_A
CHARGE-PUMP
VSN
LOGIC
CONTROL
CHARGE-PUMP
VSP
Pin Label I/O Description
1 VSP O Positive terminal of the output
2 VSN O Negative terminal of the output
3 GND - GND
4 CTRL_A I Control signal 1, this signal should be low when no pump.
5 CTRL_B I Control signal 2, this signal should be low when no pump.
6 VIN I Power supply
7 C1N O Negative terminal of the charge-pump transfer capacitor 1 (1.0uF/10V)
8 C1P O Positive terminal of the charge-pump transfer capacitor 1 (1.0uF/10V)
9 C2N O Negative terminal of the charge-pump transfer capacitor 2 (1.0uF/10V)
10 C2P O Positive terminal of the charge-pump transfer capacitor 2 (1.0uF/10V)
11 C3N O Negative terminal of the charge-pump transfer capacitor 3 (1.0uF/10V)
12 C3P O Positive terminal of the charge-pump transfer capacitor 3 (1.0uF/10V)