9
dc1780abfa
DEMO MANUAL DC1780A-B
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
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C
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B
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A
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μ
DO NOT STUFF 0 OHM JUMPERS
FOR SEPARATE VOUT2_U2.
COM
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R2
9
10
R2
9
10
C1
1
1uF
10V
C1
1
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10V
R2
3
0 O
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R2
3
0 O
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R3
8
(OP
T
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R3
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(OP
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R1
9
0 O
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R1
9
0 O
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C8 (OP
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C8 (OP
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U2
LTM4620EV
U2
LTM4620EV
VOUT
1
A1
VOUT
1
A2
VOUT
1
A3
VOUT
1
A4
VOUT
1
A5
VOUT
1
B1
VOUT
1
B2
VOUT
1
B3
VOUT
1
B4
VOUT
1
B5
VOUT
1
C1
VOUT
1
C2
VOUT
1
C3
VOUT
1
C4
VF
B1
D5
SW
1
G2
PGOOD
1
G9
CO
M
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1
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RUN1
F5
T
R
AC
K1
E5
VOU
T
1S
C5
VOU
T
2
A8
VOU
T
2
A9
VOU
T
2
A10
VOU
T
2
A11
VOU
T
2
A12
VOU
T
2
B8
VOU
T
2
B9
VOU
T
2
B10
VOU
T
2
B11
VOU
T
2
B12
VOU
T
2
C9
VOU
T
2
C1
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VOU
T
2
C1
1
VOU
T
2
C1
2
VF
B2
D7
SW
2
G11
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G8
CO
M
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2
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RUN2
F9
T
R
AC
K2
D8
VOU
T
2S
C8
VI
N
M2
VI
N
M3
VI
N
M4
VI
N
M5
VI
N
M6
VI
N
M7
VI
N
M8
VI
N
M9
VI
N
M1
0
VI
N
M1
1
VI
N
L2
VI
N
L3
VI
N
L4
VI
N
L5
VI
N
L6
VI
N
L7
VI
N
L8
VI
N
L9
VI
N
L10
VI
N
L11
VIN
K2
VIN
K3
VIN
K4
VIN
K9
VIN
K10
VIN
K11
VIN
J2
VIN
J3
VIN
J4
VIN
J9
VIN
J10
VIN
J11
GN
D
A6
GN
D
A7
GN
D
B6
GN
D
B7
GN
D
D1
GN
D
D2
GN
D
D3
GN
D
D4
GN
D
D9
GN
D
D1
0
GN
D
D1
1
GN
D
D1
2
GN
D
E1
GND
E2
GND
E3
GND
E4
GND
E10
GND
E11
GND
E12
GND
F1
GND
F2
GND
F3
GND
F10
GND
F11
GND
F12
GND
G1
GND
G3
GND
G10
GND
G12
GND
H1
GND
H2
GND
H3
GND
H4
GND
H5
GND
H6
GND
H7
GND
H9
GND
H10
GND
H11
GND
H12
GND
M12
GND
M1
GND
L12
GND
J1
GND
J5
GND
J8
GND
J12
GND
K1
GND
K5
GND
K6
GND
K7
GND
K8
GND
K12
GND
L1
SGND
C7
SGND
D6
SGND
F6
SGND
F7
SGND
G6
SGND
G7
F
SET
C6
PH
ASM
D
G4
DI
FFP
E8
DI
FFN
E9
CLK
OUT
G5
MO
DE
-PLLIN
F4
TEMP
J6
IN
T
V
C
C
H8
EXT
VC
C
J7
DI
FFO
UT
F8
R2
8
0 O
h
m
R2
8
0 O
h
m
C1
0
2.
2uF 10V
C1
0
2.
2uF 10V
+
CO
UT
1
2
470uF
4V
7343
+
CO
UT
1
2
470uF
4V
7343
E13
VO
2-
E13
VO
2-
E11
SW
1-
2
E11
SW
1-
2
R2
1
121K
1%
R2
1
121K
1%
CO
UT
1
7
(OP
T
)
1210
CO
UT
1
7
(OP
T
)
1210
CIN1
0
22uF
25V
1210
CIN1
0
22uF
25V
1210
R2
0
0 O
h
m
R2
0
0 O
h
m
R2
2
0 O
h
m
2010
R2
2
0 O
h
m
2010
R3
4
0 O
h
m
R3
4
0 O
h
m
R2
4
0 O
h
m
2010
R2
4
0 O
h
m
2010
E14
SW
2-
2
E14
SW
2-
2
+
CO
UT
2
5
470uF 4V
7343
+
CO
UT
2
5
470uF 4V
7343
R3
1
121K
1%
R3
1
121K
1%
J5
VO
U
T
2_U
2
VO
UT
/
J5
VO
U
T
2_U
2
VO
UT
/
CIN9
22uF
25V
1210
CIN9
22uF
25V
1210
CO
UT
1
6
(OP
T
)
1210
CO
UT
1
6
(OP
T
)
1210
R3
0
(OP
T
)
R3
0
(OP
T
)
R2
6
0 O
h
m
2010
R2
6
0 O
h
m
2010
C1
4
(OP
T
)
C1
4
(OP
T
)
CO
UT
1
5
100uF
10V
1210
CO
UT
1
5
100uF
10V
1210
+
CO
UT
1
9
470uF
4V
7343
+
CO
UT
1
9
470uF
4V
7343
C1
2
(OP
T
)
C1
2
(OP
T
)
C9 (OP
T
)
C9 (OP
T
)
E12
VO
2+
E12
VO
2+
R3
6
10K
R3
6
10K
R3
5
0 O
h
m
R3
5
0 O
h
m
CIN7
22uF
25V
1210
CIN7
22uF
25V
1210
CO
UT
3
8
100uF
10V
1210
CO
UT
3
8
100uF
10V
1210
J6
GN
D
J6
GN
D
R6
1
(OP
T
)
R6
1
(OP
T
)
R2
7
0 O
h
m
R2
7
0 O
h
m
R3
3
0 O
h
m
R3
3
0 O
h
m
C1
5
(OP
T
)
C1
5
(OP
T
)
CO
UT
1
1
100uF
10V
1210
CO
UT
1
1
100uF
10V
1210
CO
UT
1
8
100uF
10V
1210
CO
UT
1
8
100uF
10V
1210
R3
7
(OP
T
)
R3
7
(OP
T
)
C1
3
(OP
T
)
C1
3
(OP
T
)
CO
UT
1
3
(OP
T
)
1210
CO
UT
1
3
(OP
T
)
1210
CIN8
22uF
25V
1210
CIN8
22uF
25V
1210
R2
5
10
R2
5
10
CO
UT
1
4
(OP
T
)
1210
CO
UT
1
4
(OP
T
)
1210
R3
2
0 O
h
m
R3
2
0 O
h
m