Linear Technology LTC4120EUD, Demo Manual

Page: 10 / 12

10
dc1969aabfb
DEMO MANUAL
DC1969A-A/DC1969A-B
SCHEMATIC DIAGRAM
Figure 11. DC1967A Circuit Schematic
4 4
3 3
2 2
1 1
4
4
3
3
2
2
1
1
UNLESS NOTED: RESISTORS: OHMS, 0402, 1%, 1/16W CAPACITORS: uF, 0402, 10%, 50V
1.221V
U2.3
U3.3
DI
SABLE
MONIT
OR
1.186V
ENABLE
1.186V
CH
G C
UR
RE
NT
2
DEMO CIRCUIT 1967A-A/B
2
2
BAR GRA
PH FOR 400mA WIRELE
SS SY
NC
HR
ON
OU
S
N/A
LTC4120EUD - 4.2 / LTC4120EUD
NC GEORGE B
.
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ATTE
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CHARG
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APPROVALS
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TECHNOLOGY
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VPROG
VBAR
D12
94%
1
2
R21
100k
C8 0.01µF
R14 432
JP5
U2E LT
C1
445CDHD
8 9 REF V-
R25
1k 5%
R32 1k
5%
R16 34.8k
D6
19%
1
2
R19 100k
U3D
LT
C1
445CDHD
13 12
14
9
15
3
17
R20 100k
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
R17 100k R24 49.9k
C6 0.01µF
R23 100k
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
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