8. Schematic Diagrams
8.1. System Power
Vout=VFB*(1+RA/RB)
VFB=0.8V
RB=0.7K~5Kohm
1.3V Core Power
RA
RB
VCC1.8V for DDR2 Power
R1
R2
Vout=Vref*(1+R2/R1)+Iadj*R2
Vref=1.25V
12
1
measure current
12V INPUT/ 5A
high turn on
5V Power for normal operating
Panel Power
Lo: Off
Hi: On
H : Power on
L : Standby
12V Power for normal operating
Tuner Power
3.3V normal operating
3.3V Stand-by Power
For T7
<100
mS
VCC1.2V_FB
VCC1.2V_OUT
VCC5V_EN
VCC1.8V_ADJ
VCC5V_IN
VCC5V_OCSET
ADJ_PWM
BL_EN
Panel_ON-P1
VPANEL_IN
POWER_SW
TU_PW_CON
SW
POWER_SW
Dimming
VCC3.3V_ADJ2
DCR_EN
DCR
DCR
ADJ_PWM
ON_PBACK
TU_PW_CON
VCC3.3V_ADJ1
Panel_ON-P1
BL_EN
Dimming
DCR_EN
SW
SW
POWER_SW
4
DCR
4
ADJ_PWM
4
ON_PBACK
4
TU_PW_CON 10
Panel_ON-P1
4
VCC1.3V
5V_2
VCC1.8V
3.3V_2
3.3V_STB
5V_STB
5V_STB
5V_STB
PANEL-VCC
5V_STB
VCC12V
VCC12V
5V_DTV
5V_STB
VCC12V
+12V_AMP
5V_STB
5V_2
3.3V_2
5V_2
5V_STB
3.3V_STB
3.3V_STB
5V_STB
5V_STB
VCC12V
3.3V_STB
VCC12V
R105
10K/NC
R131
10K
C104
NC
1
1
C117
0.1uF
R121
110/1%
L101
FB/80R/6A
L109
FB/80R/6A
R118
82K
D101
SR36
R115
4.7K
C108
NC/0.1uF
C109
0.1uF
C131
0.1uF
R133
10K
R114
NC
R124
182/1%
+
C143
100uF/16V
R116
10K
R139
2.2K
+
C133
220uF/16V/LowESR
L107
NC/FB/80R/6A
L106
NC/FB/600R/1.5A
L104
22uH/SMD
R117
NC
R122
NC
R502
4.7K/NC
+
C115
220uF/16V/LowESR
C132
0.1uF
C124
0.1uF
C134
0.1uF
R518
NC
C120
NC
L108
FB/80R/6A
L112
22uH/SMD
R505
15K
I107
AP9435GM
1
8
2
7
3
6
4
5
S
D
S
D
S
D
G
D
R109
82K/NC
R128
110/1%
R126
3K
R507
NC
+
C110
470uF/16V/LowESR
Q103
NC/2N3904
1
3
2
I105
1084-ADJ
1
2
3
4
ADJ
VOUT
VIN
TAB
C118
0.1uF
R104
NC
R136
200/1%
Q107
NC
1
3
2
R138
10K
R506
5.6K
+
C140
10uF/16V
R127
100K
C148
0.1uF
+
C142
100uF/16V
Q105
2N3904
1
3
2
R140
82K
R106
NC
Q110
2N3904
1
3
2
1
1
R146
1.21K/1%
R503
4.7K
R110
0R
I106
NC/1084-ADJ
1
2
3
4
ADJ
VOUT
VIN
TAB
Q108
2N3904
1
3
2
R145
NC
I133
1117-ADJ
1
2
3
4
ADJ
VOUT
VIN
TAB
C130
0.1uF
1
1
P101
S12B-PH
1
2
3
4
5
6
7
8
9
10
11
12
D102
SR36
R103 0R
L105
FB/600R/1.5A
+
C101
470uF/16V/LowESR
C150
NC/0.1uF
R504
4.7K
L111
NC/FB/600R/1.5A
C113
NC/0.1uF
R102 10K
+
C128
220uF/16V/LowESR
R125
1K
C136
0.1uF
C138
0.1uF
+
C126
470uF/16V/LowESR
I103
1117-ADJ
1
2
3
4
ADJ
VOUT
VIN
TAB
C144
0.1uF
R107
NC
R111
NC/4.7K
R112 10K
R108
4.7K
R142
NC
R123
NC
Q102
2N3904
1
3
2
L102
FB/120R/3A
R135
10K
+
C141
220uF/16V/LowESR
C107
0.1uF
R134
NC
L103
NC
C121
NC
C145
0.1uF
R141
3K
C129
0.1uF
+
C103
NC
R113
0R
Q104
2N3904
1
3
2
I102
AP9435GM
1
8
2
7
3
6
4
5
S
D
S
D
S
D
G
D
C102
0.1uF/NC
R147
1.82K/1%
C146
NC/0.1uF
I108
AP1534
1
2
3
4
5
6
7
8
FB
EN
OCSET
VCC
OUTPUT
OUTPUT
VSS
VSS
C147
0.1uF
R132
1.21K/1%
Q101
2N3904/NC
1
3
2
Q111
NC/2N3904
1
3
2
I101
AP9435GM/NC
1
8
2
7
3
6
4
5
S
D
S
D
S
D
G
D
L110
NC
1
1
I104
AP1534
1
2
3
4
5
6
7
8
FB
EN
OCSET
VCC
OUTPUT
OUTPUT
VSS
VSS
R501
4.7K
R137
90.9/1%
C112
0.1uF
R143
100K
Q109
2N3904
1
3
2
C111
0.1uF
R144
4.7K
R130
6.49K/1%
C106
0.1uF/NC
C105
NC/0.1uF
C116
0.1uF
C139
0.1uF
C122
0.1uF
R129
182/1%
ADJ_PWM 4
ON_PBACK 4
ViewSonic Corporation
Confidential - Do Not Copy
VT2730
-
1
M
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