DC1674A - Schematic

5
4
3
NON - OPERATING FAULT TOLERANCE TO
+ / - 27V CONTINUOUS.
E1
C1
22uF
1210
25V
D
C2
22uF
1210
25V
NON - OPERATING FAULT TOLERANCE TO
+ / - 27V CONTINUOUS.
Q2B
MMDT3904
VBUS
GND
GND
GND
GND
GND
GND
ID
C4
4.7uF
1206
50V
D+
TP1
DTP2
D+
DGND
M2B
FDMC8030
Q2A
MMDT3904
M2A
FDMC8030
3.6k
5%
0805
USBSNS
TP7
E4
U1
USBGT
TP6
1
3
5
7
9
11
13
+
+
+
+
+
+
+
+
+
+
+
+
+
+
2
4
6
8
10
12
14
SDA
TP15
USBGT
USBSNS
10
OVGCAP
R10
5.1k
5%
U2
B
8
6
VCC
SCLK
SDA 5
1
2
3
A0 256X8
A1
A2
7
WP
24LC025I/ST
28
1
2
JP1
C11
22uF
0805
6.3V
20%
0
VOUTSNS
TP13
SCL
SDA
DVCC
CLPROG2
PROG
14
NTCBIAS
-B
LTC4156EUFD
D
VOUT
3.5V - 4.5V
4A
C13
22uF
1210
25V
20%
OPT
C12
22uF
0805
6.3V
20%
GND
E14
DF3-3P-2DSA
1 BAT J3
2 GND OPT
3 NTC
M3
Si5481DU
C9
0.047µF
25V
DVCC
C8
TBD
25V
OPT
NTC
IRQ
C10
100uF
6.3V
1210
20%
D1
LNJ208R8ARA
INTERRUPT
PENDING
RED
R21
TBD
OPT
C
VFLOAT = 4.05V,
4.1V, 4.15V, 4.2V
4A
R22
0
VC
TP9
R13
100k
15
LTC4155EUFD
BATGATE
TP10
CLPROG1
18
U1
-A
LEAKAGE CURRENT MUST BE < 50nA
ID
BATSNS 16
VC 12
6
ASSY
05-05-11
E15
R23
VOUTSNS 13
USB
3
R12
51k
5%
R11
5.1k
5%
SW 26
SW 27
DATE
GEORGE B.
L1
1.0µH
XFL4020-102ME
BATGATE 17
2
USER
1
C6
0.01uF
25V
C7
0.1µF
25V
SCL
TP16
INPUT CURRENT
0
25
VOUT 22
VOUT 21
CHGSNS 20
CHGSNS 19
5
R9
R8
100k
J2
DVCC
TP14
24
WALLSNS
WALLGT
9
8
4
DVCC
23
VBUS VBUS VBUS
C5
0.01µF
25V
ID
TP3
DC590
INTERFACE
7
11
*
APPROVED
NOTES: UNLESS OTHERWISE SPECIFIED
1. RESISTORS: OHMS, 0402, 1%, 1/16W
2. CAPACITORS: uF, 0402, 10%, 50V
TP11
SW
OVGCAP
TP8
GND
C
PRODUCTION FAB
VBUS
TP12
U1.7,9,10 : LEAKAGE CURRENT
MUST BE < 400nA
5%
R6
DESCRIPTION
2
*
C3
22uF
0805
6.3V
20%
R5
1Meg
R7
1.0
5%
J1
MICRO-B
R4
47k
5%
REV
-
TP4
WALLSNS
TP5
WALLGT
FDMC8030
M1B
E3
4.35V - 5.5V
ECO
R2
3.6k
5%
0805
FDMC8030
M1A
R3
47k
5%
USB
1
R1
1Meg
5%
Q1B
MMDT3904
WALL
4.35V - 5.5V
E2
GND
2
REVISION HISTORY
Q1A
MMDT3904
BAT
E13
BATSNS
E12
GND
E11
R20
1k
5%
B
0603
3
IRQ
E10
GND
29
VSS
4
E5
E6
JP2
1
INT
NTC
E7
CLPROG1
CLPROG2
A
2
NTCBIAS
E8
CUSTOMER NOTICE
E9
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.
R18
0
PROG
R14
1.21k
R15
1.21k
R16
499
R17
100k
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
R19
0
NTC
3
EXT
3
APPROVALS
TECHNOLOGY
PCB DES.
NC
APP ENG.
GEORGE B.
TITLE: SCHEMATIC
DUAL INPUT POWER MANAGER / 3.5A Li-Ion
BATTERY CHARGER WITH I2C CONTROL AND USB OTG
SIZE
IC NO.
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
REV.
LTC4155EUFD / LTC4156EUFD
DEMO CIRCUIT 1674A-A/B
05-05-11
2
SHEET 1
1
OF
1
A
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