9
dc1969aabfb
DEMO MANUAL
DC1969A-A/DC1969A-B
SCHEMATIC DIAGRAM
Figure 10. 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
OPT
FREQ
EXT
1.5
M
Hz
NTC
INT
400mA
2.7
V -
11
V
750 kHz
DISCONNECT
ED
CONNECTE
D
EM
BEDDED
INDUCTOR
1210
R1
0
TO
B
E C
ON
NE
CT
ED
T
O " B
AT
"
NO
DE
A
T B
AT
T
UR
RE
T
(E
6)
-B
ASSY
*
-A
1.40MEG
0 Ohm
OPEN
R10
R9
1.05MEG
LTC4120 - 4.2EUD
LTC4120EUD
U1
OFF
RUN
VIN > 11V
ON
2
DE
M
O
CI
RCUIT 1967A - A / B
1
2
400mA WIRELESS SYNCHRO
NO
US
B
UC
K
BATTERY
CH
AR
GE
R
N/A
LTC4120EUD - 4.2 / LTC4120EUD
NC
GEORGE B.
9 -
17
- 13
SIZE
DA
TE:
IC
N
O.
RE
V.
SHEE
T
OF
TITL
E:
APPROVALS
PC
B DES.
APP ENG
.
TECHNOLOGY
Fax: (408)434-0507
M
ilp
itas,
CA
95035
Phone: (408)432-1900
16
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cCa
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Bl
vd.
LT
C
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idential-For
Customer
Use
Only
CUSTOME
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SCHEMATIC
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SC
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www.linear.com
GEORGE B.
PR
OD
UC
TI
ON
F
AB
2
9 -
17-
13
-
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
VBAR
VPROG
IN
TV
CC
IN
TV
CC
D1
DF
LS240L
E9
GND
C5 10µF
50V
E7
nCHRG
JP4
R6 0
C3 0.01µF
0603
L1
15.0uH
R4 2.0k
5%
C2S1 4700pF
5% 50V 0805
E6
BAT
C1 10uF
16V 0805
R10
*
U1 LTC4120EUD-4.2
/ LTC4120EU
D
16
13
1
5
12
17
9
3
6
10
7
2
4
8
15 14
11
RUN
PROG
INTVCC
GND
NTC
GND
BAT
IN
DHC
BATSNS/FB
FREQ
BOOST
SW
CHGSNS
FAULT
CHRG
NC/FBG
E10
5V - 40V
VIN
E4
PROG
JP3
R9
*
E2
GND
E8
nFAU
LT
R5 3.01k
R2
412k
R11 100k
5%
D2 DF
LS
240L
E3
NTC
R1 1.40MEG
C2S2 0.022µF
5% 50V 0805
E5
GND
R7 10k
R12 100k
5%
C2 47uF
16V 1210
D3
DF
LS
240L
C4 2.2µ
F
6.3V
E1
Cx
C2P2 1800pF
5% 50V 0603
R3
10k
R8
0
JP2
C2P1 4700pF
5% 50V 0805
J1
DF3-3P-2
DS
A
1 2 3
BAT
GND
ENTC
Embedded Inductor
43T
Lr 47µH
JP1
39V
D4 DFLZ39
