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20" LCD Color Monitor
SOT-223
U701
+5V
NC/LT1117-18
3
2
VI
VO
4
VO
C701
NC
100uF/25V
BL_ADJ(DC)
R31
0V ~ 3.3V
4.7K
0V ~ 5V
4.7K
BL_ADJ
R31
P W M
47
D C
4K7
+12V
+12V
4
CN701
C706
C707
+
GND
1
0.1uF
GND
3
100uF/25V
+12V
5
GND
+5V
7
+5V
9
3,4
+5V
GND
11
C710
CONN
C709
+
VCC5V
0.1uF
100uF/25V
R706 NC
Adj_BACKLIGHT
4
R707
4.7K
1/16W
10/20/2005 : For Panel Protection. Add Q708, Q709, R733~R737, C721~C722
+3V3
R714
R716
R717
10K
1/16W
NC
10K
1/16W
R733
R734
NC
10K
1/16W
R725
4.7K
1/16W
R735
Q708
C718
4
on_Panel
4.7K
1/16W
PMBS3904
0.1uF
C721
0.1uF
+3V3
H1
+3V3
9
9
C703
C704
+
NC
C51
R32
R29
R33
Q4
1UF
0
X
X
X
1UF
X
1K
4.7K
MMBT3904
C32
N.C
+5V
1uF
R708
+5V
10K
1/16W
2
BL_ON
R710
NC
4
BL_ADJ
6
+12V
8
GND
C711
10
+5V
R712
4.7K
1/16W
12
GND
0.1uF
Q703
PMBS3904
D704(SSM12L) Vf=0.38V and If=1A.
So when system power on, the
R701
system loading is about 400mA
1K
1/16W
(3.3V is about 200mA and 1.8V is
about 200mA), So D35 changed
R705 4.7K
1/16W
from 1N4148(or BAT42) to
SSM12L(schottky diode).
Q701
C708
PMBS3904
1uF
P.S: The 1N4148 Vf=0.7V~1V can't meet
LDO spec. The BAT42, Vf is OK but the
If=200mA(forward current) can not
meet current spec.
+3V3
+5V
VLCD
VLCD
5
+5V
+3V3
R715
NC
R721
R722
Q704
R723 51K
1/16W
AO3401L
0
1/16W
NC
Q706
C715
PMBS3904
0.1uF
+
C717
R727
10uF/16V
10K
1/16W
4
on_Panel_12V
H2
H3
5
9
5
9
5
5
9
5
9
5
4
4
4
4
4
4
TP
TP
TP
R711
10K
1/16W
on_BACKLIGHT
4
3,4
+5V
For RSDS and Panel VCC=12V
+5V
+5V
+12V
R729
R718
NC/10K
R736
NC/10K
NC/10K
R726 NC/4K7
Q707
R737 NC/4K7
Q709
C720
NC/PMBS3904
NC/0.1uF
C722
NC/0.1uF
19
D701
1N4148
B
Q702
D702
CHT2907
1N4148
C705
1uF/16V
R704
100
1/16W
+5V
PC5V
3,4
+5V
PC5V
3
Recommond to used "Blue" parts circuit
for VCC1.8V if you want to suppoert DDC
R732
R709
function when system power off
+5V
10
1/16W
0
1/16W
D704
D703
TO-263
SMAL140
BAT54C
U702
3
2
VIN
VOUT
4
VOUT
1
ADJ
R713
C713
AIC1084-33PM
NC
0.1uF
R720
0
1/16W
12/21 MODIFY
VLCD_12V
+5V
+12V
VLCD_12V
5
R719
R730
NC/10K
R731
Q705
0
1/16W
NC
R724 51K
AO3401L
C716
0.1uF
NC/PMBS3904
C719
R728
+
NC/10uF/16V
NC/4K7
Title
Size
Custom
Date:
Planar PE2010
VCTRL
4
R702
51
1/16W
VCC1.8
+
C702
VCC1.8
4
4.7uF/16V
R703
2K
1/16W
VCC3.3
VCC3.3
4
VCC3.3
VCC3.3
4
C712
C714
+
100uF/25V
0.1uF
Power
Document Number
Rev
715G1558-1-ao.DSN
B
Friday, October 21, 2005
Sheet
3
of
6
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