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DC1967A_15

Description
400mA WIRELESS SYNCHRONOUS BUCK BATTERY CHARGER
File Size89KB,2 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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DC1967A_15 Overview

400mA WIRELESS SYNCHRONOUS BUCK BATTERY CHARGER

4
3
2
1
REVISION HISTORY
ECO
REV
2
DESCRIPTION
PRODUCTION FAB
APPROVED
GEORGE B.
DATE
9 - 17- 13
-
E10
4
VIN
R1
1.40MEG
D4
DFLZ39
39V
C5
10µF
50V
1210
5V - 40V
4
D1
DFLS240L
JP2
RUN
ON
VIN > 11V
OFF
R11
100k
5%
R12
100k
5%
E9
GND
E8
nFAULT
E7
R2
412k
16
RUN
3
IN
U1
LTC4120-4.2EUD / LTC4120EUD
FAULT
CHRG
E1
Cx
EMBEDDED INDUCTOR
3
C2S1
4700pF
5%
50V
0805
C2P1
4700pF
5%
50V
0805
C2S2
0.022µF
5%
50V
0805
C2P2
1800pF
5%
50V
0603
D3
DFLS240L
D2
DFLS240L
INTVCC
FREQ
1.5 MHz
750 kHz
JP3
15
14
INTVCC
INTVCC
nCHRG
1
2
C4
2.2µF
C3
0.01µF
6.3V
L1
15.0uH
3
BOOST
DISCONNECTED
CONNECTED
E2
GND
43T
Embedded
Inductor
R3
10k
7
FREQ
JP1
SW
4
8
9
0603
6
CHGSNS
DHC
BAT
E3
NTC
Lr
47µH
12
NTC
C1
10uF
16V
0805
R12 TO BE CONNECTED TO " BAT "
NODE AT BAT TURRET (E6)
NC/FBG
GND
GND
VBAR
E6
C2
47uF
16V
E5
1210
BAT
2.7 V - 11V
400mA
GND
E4
PROG
R4
2.0k
5%
VPROG
10
13
BATSNS/FB
PROG
11
R9
*
R10
*
R5
3.01k
J1
OPT
1
2
3
BAT
GND
ENTC
5
17
2
2
DF3-3P-2DSA
R8
0
JP4
NTC
INT
R6
0
EXT
*
UNLESS NOTED:
RESISTORS: OHMS, 0402, 1%, 1/16W
CAPACITORS: uF, 0402, 10%, 50V
ASSY
-A
-B
U1
LTC4120 - 4.2EUD
LTC4120EUD
R9
OPEN
1.40MEG
R10
0 Ohm
1.05MEG
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
R7
10k
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
APPROVALS
PCB DES.
APP ENG.
NC
GEORGE B.
1
TECHNOLOGY
TITLE: SCHEMATIC
1
400mA WIRELESS SYNCHRONOUS BUCK BATTERY CHARGER
SIZE
IC NO.
N/A
SCALE = NONE
DATE:
LTC4120 - 4.2EUD / LTC4120EUD
DEMO CIRCUIT 1967A - A / B
SHEET 1
1
REV.
2
OF
2
9 - 17 - 13
4
3
2

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