Read Panasonic CF-VEB181U Service Manual online
VB3
BLM41P600SPTM00-03/E250
L28
1
2
VA3
USBEN1
001:E5;006:B8;006:D8;006:G10
VA5
VB5
XP0421300L
Q3
5
3
4
XP0421300L
Q3
6
2
1
FDW254P
Q5
FAIRCHILD
TSSOP8
Pch-MOSFET
1
D
2
S
3
S
4
G
8 D
7 S
6 S
5 D
7 S
6 S
5 D
FDW254P
Q7
FAIRCHILD
TSSOP8
Pch-MOSFET
1
D
2
S
3
S
4
G
8 D
7 S
6 S
5 D
7 S
6 S
5 D
USBEN1
001:E5;006:B8;006:G8;006:G10
PR15
040115MR003T101Z0
CN915
SUYIN
1
15V
2
GND
3
GND
VA5
SLP_S3#
001:D6
FDW254P
Q6
FAIRCHILD
TSSOP8
Pch-MOSFET
1
D
2
S
3
S
4
G
8 D
7 S
6 S
5 D
7 S
6 S
5 D
SLP_VB5
R49
100K
R47
1M
R48
1M
R50
100K
R63
100K
R61
1M
C87
0.01u
B
C88
0.01u
B
C93
1000p
B
50V
C84
0.1u
0.1u
B
1608
C85
NU
B
NU
B
1608
C86
NU
B
NU
B
1608
R65
NU 3216
R52
NU 3216
R51
NU 3216
451004
F1
4.0A
2
1
C100
10u
25V
B
3225
FDS6690A
Q9
FAIRCHILD
SOP8
Nch-MOSFET
1 S
2 S
3 S
4 G
2 S
3 S
4 G
8
D
7
D
6
D
5
D
50V
C97
0.1u
1608
FDS6690A
Q10
FAIRCHILD
SOP8
Nch-MOSFET
1 S
2 S
3 S
4 G
2 S
3 S
4 G
8
D
7
D
6
D
5
D
R57
22K
L
TC1778EGN#TR
IC1
1
LINEAR
TECH.
SSOP16(1.75mH)
1 RUN/SS
2 PGOOD
3 VRNG
4 FCB
16
BOOST
15
TG
14
SW
13
PGND
5 ITH
6 SGND
7 ION
8 VFB
12
BG
11
INTVCC
10
VIN
9
EXTVCC
MAIN15
R54
36K
1%
EC10QS04-TE12L
D5
2
1
C98
0.22u
2012
919AS-4R7M=P3
L29
1
2
R58
0
R67
1M
C90
470p
C91
100p
R60
191K
1%
R53
0
C96
0.01u
6.3V
C99
10u
2125
PGND
6.3V
C103
150uF
SP-CAP
D
EEFUE0J151R
+
C92
NU
PGND
VA5
R56
NU
6.3V
C101
10u
2125
R59
NU
R68
0
R55
NU
PGND
6.3V
C102
NU
SP-CAP
D
EEFUE0J151R
+
C95
NU
RB500V
-40TE-17
D4
1
2
C89
0.01u
B
1608
VA5
R1130H251B-T1-FB
IC16
RICOH
SOT89-5
C0DBZFD00029
2 Vin
3 GND
5 CE
1
Vout
4
NC
VA25
C147
0.1u
C149
10u
6.3V
2125
C146
0.1u
C148
10u
6.3V
2125
R1130H331B-T1
IC15
RICOH
SOT89-5
C0DBCBD00001
2 Vin
3 GND
5 CE
1
Vout
4
NC
VA3
VA5
R62
1M
R64
100K
VB25
USBEN1
001:E5;006:B8;006:D8;006:G8
XP0421300L
Q4
5
3
4
VA25
R66
NU 3216
FDW254P
Q8
FAIRCHILD
TSSOP8
Pch-MOSFET
1
D
2
S
3
S
4
G
8 D
7 S
6 S
5 D
7 S
6 S
5 D
XP0421300L
Q4
6
2
1
R69
0
R70
NU
USBEN1
001:E5;006:D8;006:G8;006:G10
VA5
C150
10u
25V
B
3225
C151
10u
25V
B
3225
C152
0.047u
B
R133
4.7K
1608
R131
4.7K
1608
R132
4.7K
1608
R135
4.7K
1608
R134
4.7K
1608
R143
3.3
2SK3019TL
Q11
Q11
2
3
1
R144
33K
1%
R145
1M
MAIN15
2SC4617TLQ
Q12
Q12
1
3
2
R146
3.74K
1%
C94
0.01u
B
2003.3.11 F1 added
Vout=0.8*(1+RH/Rl)
VA5=5.0V
250mV@6A
Vref=0.792
0.808V
RH=189.09
192.91Kohm
RL=35.64
36.36Kohm
Vout=Vref*(1+RH/RL)
Vout=4.9108
5.1815V
(SPEC Vout=4.75
5.25V)
i=450mA MAX.
i=450mA MAX.
V=2.5V
i=450mA MAX.
V=3.3V
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
I
J
2.6 DC-in/Power supply
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