DC756A - Schematic

VDD
R4
0.01, 1%
VBAT
R5
10M
-
E2
U2
VL/CHRG
R1
22K
GND
R2
22K
R8
100K
R9
100K
U1
INT
GND 8
Q7 7
11 D0
12 D1
D7 6
D6 5
13 D2
14 D3
D5 4
D4 3
15 CE
16 VCC
CP 2
PL 1
C2
0.1
D
SCK
CS
R10
100K
CD74HCT165M
R11
100K
3
2
GND 7
POL 6
Q3
2N7002
1
LTC4150CMS
E5
J1
SHDN
E6
CLR
3
CLR
4 CF5 SHDN
C1 4.7UF
0805
E7
INT
E8
POL
Q4
2N7002
MISO
MOSI
1
POL
SHDN
JP1
SD
SELF CLR
RUN
JP2
SC
2
SHDN
0805
Q2
2N7002
1
9 Q7
10 DS
2
C3
4.7UF
VCC
3
R7
100K
2
R6
100K
C
R3
22K
Q1
2N7002
1
1 SENSE+ INT 10
2 SENSE- CLR 9
3 CF+
VDD 8
1
VCC
E1
3
D
2
R12
100K
EESDA
EXT CLR
E10
CS
VCC
C
GND
R15
5.1K
R14
475
R16
5.1K
U3
3
3
RED
DISCHARGE
LED1
QTLP600C-74
3
Q6
2N7002
2
1
2
Q5
2N7002
6 6
8 8
1
2
4
GREEN
CHARGE
1
5 5
7 7
E9
SCK
HD2X7-079-MOLEX
R13
475
POL
2 2
4 4
9 9 10 10
11 11 12 12
13 13 14 14
EESCL
VCC
B
VCC
1 1
3 3
1 A0
2 A1
VCC 8
WP 7
3 A2
4 VSS
SCL 6
SDA 5
C4
0.1
TP1
24LC025
1
3
B
R17
5.1K
2
E4
GND
+
3
-
E3
VBAT
4
+
5
Q7
2N7002
1
VSS
2
SHDN
CUSTOMER NOTICE
NOTES: UNLESS OTHERWISE SPECIFIED
A
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 16V, 0402.
2. INSTALL SHUNT ON JP1-JP2 PIN 1 AND 2.
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
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CONTRACT NO.
APPROVALS
DRAWN:
CHECKED:
TITLE:
APPROVED:
ENGINEER: DILIAN R.
DESIGNER:
4
3
DATE:
2
SCHEMATIC
COULOMB COUNTER/BATTERY GAS GAUGE
SIZE
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
TECHNOLOGY
KIM T.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DWG NO.
REV
DC756A-1 * LTC4150CMS
Monday, June 21, 2004
SHEET
1
A
1
OF 1
A
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