6
dc1860bfa
DEMO MANUAL DC1860B
scheMAtic DiAgrAM
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
VIN
SW
VO
PT
DI
O
DE
V
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+
SIZ
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DAT
E
:
IC
N
O
.
R
EV.
SH
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F
TI
TLE
:
AP
P
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PC
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D
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.
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L
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HAS
M
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A
BE
S
T
E
F
F
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T
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S
IG
N
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T
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M
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UP
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H
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:\P
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\1860
B
\R
E
V
_B
(09-
17
-12)
\S
C
H
\18
60B
_R
E
V1
.D
SN
SIZ
E
DAT
E
:
IC
N
O
.
R
EV.
SH
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F
TI
TLE
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V1
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R
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VI
S
ION
HI
S
T
OR
Y
DESCRIPTION
DATE
APPROVED
ECO
REV
ZHONGMING Y.
PRODUCTION
1
O
c
t
01,
2012
R
E
VI
S
ION
HI
S
T
OR
Y
DESCRIPTION
DATE
APPROVED
ECO
REV
ZHONGMING Y.
PRODUCTION
1
O
c
t
01,
2012
R
E
VI
S
ION
HI
S
T
OR
Y
DESCRIPTION
DATE
APPROVED
ECO
REV
ZHONGMING Y.
PRODUCTION
1
O
c
t
01,
2012
R
16
11.
8k
1% 1206
R
16
11.
8k
1% 1206
D2
D
F
LS
1100
D2
D
F
LS
1100
JP
1
S
HDN
RUN
S
HDN
JP
1
S
HDN
RUN
S
HDN
1
3
2
+
C9
470uF 63V
+
C9
470uF 63V
U1 LT3748EMS
U1 LT3748EMS
V
IN
1
E
N/
UV
L
O
3
INT
V
CC
5
RF
B
16
G
A
TE
6
SEN
SE
7
G
ND
9
G
ND
8
SS
10
TC
12
VC
11
RE
F
14
R
10
40.
2k
1%
R
10
40.
2k
1%
R1
16k 1206
R1
16k 1206
E6
V
OU
T
+
54V
@0.
7A
E6
V
OU
T
+
54V
@0.
7A
C7
4.
7uF
100V
1812
C7
4.
7uF
100V
1812
C8
4.
7uF
100V
1812
C8
4.
7uF
100V
1812
R4 200k 1%
R4 200k 1%
E1
VIN
10V
-15V
E1
VIN
10V
-15V
E2
GN
D
E2
GN
D
D3
P
D
S
3200-
13
D3
P
D
S
3200-
13
1
2
3
C
10
4.
7uF
16V
0805
C
10
4.
7uF
16V
0805
C
14
6800pF
C
14
6800pF
C
11
0.
33uF
C
11
0.
33uF
R8
22
R8
22
C
12
470pF
C
12
470pF
D1
1S
M
B
5943B
T
3
D1
1S
M
B
5943B
T
3
R9
270k
R9
270k
R
15
11.
8k
1% 1206
R
15
11.
8k
1% 1206
C
13
2.
2nF
250V 1812
C
13
2.
2nF
250V 1812
C6
4.
7uF
100V
1812
C6
4.
7uF
100V
1812
E4
VO
PT
-
(O
pt
)
E4
VO
PT
-
(O
pt
)
R
12
0.
005
1206
R
12
0.
005
1206
C2 22uF 16V 1210
C2 22uF 16V 1210
+
C1 330uF 25V SAN
YO
(O
pt
)
+
C1 330uF 25V SAN
YO
(O
pt
)
E7
V
OU
T
-
E7
V
OU
T
-
C3 22uF 16V 1210
C3 22uF 16V 1210
R5 36k
R5 36k
Q1
H
A
T
2173H
-E
L-
E
R
enes
as
Q1
H
A
T
2173H
-E
L-
E
R
enes
as
L1
1.
8uH
744318180
W
ur
th
E
lec
tr
oni
k
L1
1.
8uH
744318180
W
ur
th
E
lec
tr
oni
k
R
14
11.
8k
1% 1206
R
14
11.
8k
1% 1206
E5
EXT
_
EN
E5
EXT
_
EN
R7
0
O
hm
R7
0
O
hm
C5 0.
22uF
100V 0805
C5 0.
22uF
100V 0805
R2
11.
8k
1% 1206
R2
11.
8k
1% 1206
R3 0
O
hm
R3 0
O
hm
T1
750311591
T1
750311591
6
5
8
9
3
1
11
12
4
2
10
7
R6
82.
5k
1%
R6
82.
5k
1%
R
13
16k 1206
R
13
16k 1206
R
11
6.
04k
1%
R
11
6.
04k
1%
C
15
6800pF
C
15
6800pF
E3
VO
PT
+
54V
@0.
7A
(O
pt
)
E3
VO
PT
+
54V
@0.
7A
(O
pt
)
