12
dc2181afa
DEMO MANUAL
DC2181A-A/B
schematic Diagram
UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V
1.221V
U2.3
U3.3
1.186V
1.186V
CH
G C
UR
RE
NT
3
DE
M
O
CI
RCUIT 2181A - A / B
2
2
BAR GRA
PH FOR 400mA WIRE
LE
SS
SY
NC
HR
ON
OU
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N/A
LTC4120EUD - 4.2 / LTC4120EUD
NC
GEORGE B
.
BU
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ATTE
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APPROVALS
PC
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APP ENG
.
TECHNOLOGY
Fax: (408)434-0507
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ilp
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95035
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www.linear.com
VPROG
VBAR
D12
94%
1
2
R21
100k
C8 0.01µF
R14 432
U2E
LT
C1
445CDHD
8
9
REF
V-
R25
1k
5%
R32 1k
5%
R16
34.8k
D6
19%
1
2
R19 100k
R20
100k
U3D
LT
C1
445CDHD
13
12
14
9
15
3
17
R26 1k
5%
U2C
LT
C1
445CDHD
11
10
14
9
16
3
17
C9 0.01µF
U3B
LT
C1
445CDHD
7
6
14
9
1
3
17
R24
49.9k
R17
100k
R23 100k
C6
0.01µF
U2D
LT
C1
445CDHD
13
12
14
9
15
3
17
R18
100k
R30
1k
5%
R35
432
C7 1µF
10V
R33
22.6k
R28 1k
5%
U3E
LT
C1
445CDHD
8
9
REF
V-
D10
69%
1
2
R29 1k
5%
C10 1µF
10V
R34
787k
D8
44%
1
2
D11
81%
1
2
D9
56%
1
2
R42
0
D5
6%
1
2
R13 10k
5%
D7
31%
1
2
U3C
LT
C1
445CDHD
11
10
14
9
16
3
17
R31 1k
5%
R22 100k
R27 1k
5%
U2B
LT
C1
445CDHD
7
6
14
9
1
3
17
R15 22.6k
U2A
LT
C1
445CDHD
5
4
14
9
2
3
17
U3A
LT
C1
445CDHD
5
4
14
9
2
3
17
