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KX-TG9581B/KX-TG9582B/KX-TGA950B
4.2.2.4.
Power supply(3.0V) :VDD2
This power supply is for Memory IC(IC602, IC603, IC604) and LCD-module and so on.
It consists of BBIC IC601 and Q607.
VBAT steps up to VDD6(3.4V) by IC601 and IC905. After that it gets VDD2(3.0V).
Because it is to use Battery supply at power failure.
4.2.2.5.
Power supply(4.0V) :VDD7
This is a power supply for LCD back light.
It conststs of IC601 and Q911.
C620
K0.1u
Q607
R612
10k
+3.4V
C611
NC
R618
5.6k
VDD2
M_+3.0V
C621
K2.2u
R617
13k
M_+1.8V
C615
1u
LDO_CTRL
T10
LDO_IO_CTRL
V11
LDO_IO_FB
L3
AVD
E9
VDD1
P9
VDD2
L14
VDD3
A3
GND3
B4
GND4
C4
GND5
B5
GND6
C5
GND7
F5
GND8
G5
GND9
IC601
IC905
6
2
54
13
+3.4V
VBAT
IC601
U2
DC_CTRL
T3
DC_CTRLn
U1
DC_I
T2
DC_SENSE
P3
DC2_CTRL
R3
DC2_I
T1
DC2_SENSE
T17
NC16
N16
NC17
T18
NC18
R17
NC19
U18
NC20
M16
NC21
C914
22u
R910
240k
R917
100k
R903
0.1
C918
6p
L902
6.8u
GND
C907
1u
VDD6
MASTER
1V Reference
VDD7
IC601
P3
DC2_CTRL
R3
DC2_I
T1
DC2_SENSE
L966
10u
R929
0.1
R930
1.6k
R931
11k
VBAT
+4.0V
C911
1u
C901
4.7u
Q911
6
2
54
13
MASTER
0.5V Reference
Содержание KX-TGA950B
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