DC2118A - Schematic

5
4
3
2
1
SEE NOTE 4
OV PROTECTION
E1
3
2
1
ON
0.01 1%
1206
OFF
R2
357k
1%
C2
2.2uF
6.3V
0805
20
C
E11
9
FAULT
E14
8
CHRG
E15
3
CLPROG
E10
4
CHGOFF
5
BSTOFF
24
15
VSYS
6
7
IGATE
VSYS
RST
BSTFB
PFO
RSTFB
FAULT
SW
CHRG
SW
CLPROG
BAT
CHGOFF
BSTOFF
E9
25
2
GND
NTC
R4
1.69M
5V IN BACKUP
D
R12
OPT
R5 324k
1
R11
18
0
R13
10
22
21
OPT
L1
2.2uH
COILCRAFT
XAL5030-222ME
C
E6
23
VBAT
C3
10uF, 10V
0603
C7
0.1uF
0603
2A CHARGE
SEE NOTE 3
R8
17
VIN
10k
RNTC
F2
E12
PFO
C4
OPT
E8
EXTNTC
10k
12
11
F1
OPT
RST
PFI
13
E13
19
CLN
C6
D5
ORG
16
LTC4040EUFD
GND
F0
D4
ORG
COUT2
100uF
10V
1210
E5
U1
R27
121k 1%
14
D3
RED
R22
390
5%
VIN
D6
GRN
R23
390
5%
PROG
GND
R24
390
5%
VSYS
COUT1
100uF
10V
1210
GND
OVSNS
R21
390
5%
E4
C9
0.1uF
10V
JP6
E17
VSYS
3
3
7
6
5
2
2
R1
6.2k
0805
3
2
1
R7
LEDS
1
Q2
SiS424DN 8
VIN
1
VDD
CIN1
0.1uF
50V
0805
E2
8 SiS488DN
7
6
5
4
GND
D
Q1
R25
1
5%
0805
4.8V - 5.5V
4
DCIN
NTC
JP1
E18
R6
1.00k
1%
0603
INT
VDD
VSYS
EXT
D1
BAT46WJ
B
B
E16
R16
NOTES: UNLESS OTHERWISE SPECIFIED,
ENCHG
OFF
2. ALL CAPACITORS ARE 0603, X7R.
3.
F2=1(LI-ION)
F2=0(LIFEP04)
3.95V
F1
F0
3.45V
0
0
4.00V
3.50V
0
1
4.05V
3.55V
1
0
4.10V
A
3.60V
VDD
ENBST
1
1. ALL RESISTORS ARE 0402, 1%.
1
1
2
3
ON
JP2
VDD
F0
1
OFF
1
2
3
ON
VDD
1
0
JP3
VDD
VDD
F1
1
2
2
3
3
JP4
CUSTOMER NOTICE
F2
0
JP5
1
2
3
4. LIMITED BY Q1 VDS RATING.
5
4
3
GND
E7
0
E19
PROG
APPROVALS
TECHNOLOGY
TITLE: SCHEMATIC
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
OPT
JP7
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
(DEFAULT)
C5
0.1uF
1
1
EXTVDD
N/A
SCALE = NONE
DATE:
2
IC NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
BATTERY CHARGER
BACKUP POWER MANAGER
LTC4040EUFD24
DEMO CIRCUIT 2118A
SHEET 1
Friday, May 01, 2015
1
REV.
4
OF 1
A
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