DC783A - Schematic

5
3
7.0V
4
8.7V
E3
E4
PAUSE
C1
1UF,16V
0603
SEL0
SEL1
TIMER
E13
12
CHEM
5
SHDN
6
PAUSE
NIMH
SHDN
PAUSE
JP2 +VIN
SEL0
R6
68K
NUMBER OF CELLS
1 2 3 4
C
JP1
CHEM
NICD
JP3 +VIN
SEL1
A B A B
B
A
A A B B
TIMER
JP5
TIMER
C3
150PF
1
C4
470PF
3
C5
1200PF 5
2700PF 7
C6
A
2
B
4
C
6
C7
220PF
R3
330
ACPR 13
CHRG 15
1
RSENSE
R4
330
R5
OPT
0805-NS
2
D2
MBRM120LT3
2
1
E6
E8
10
SEL1
NTC 11
PROG 7
4
TIMER
ARCT 8
NTC
+VIN
SEL0
R7
4.42K
EXT
OFF
JP7
+VIN
RECHARGE
1.3V 1
2
A
1.2V 3
4
B
OFF 5
6
C
HD2X3-079
R8
1
JP4
C2
10UF,10V
1206
4
1
2
3
4
2. INSTALL SHUNTS ON JP1-JP6 PIN 2 AND 3,
ON JP7 PIN 3 AND 4.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
TECHNOLOGY
TITLE:
SCHEMATIC
SIZE
DWG NO.
DESIGNER:
CHRG
CURRENT
0.5A
CHRG
RATE
1C
TIMER
1A
1C
B
1A
0.5C
C
2A
1C
C
2A
0.5C
D
A
B
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
A
NIMH/NICD CHARGER
APPROVED:
ENGINEER: FRAN H.
C
E12
GND
JP6
CHARGE
CURRENT
KIM T.
CHECKED:
NIMH/NICD
+ 1 TO 4
CELLS
R11
931
R10
2.21K
2A
1A
0.5A
A
B
EXTERNAL
PNP
(OPT)
E11
PROG
APPROVALS
DRAWN:
E
E10
EXT NTC
CONTRACT NO.
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.
SYST LOAD
3
Q2
MJD210
R12
2.8K
CUSTOMER NOTICE
GND
E9 BAT
R9
576
B
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 16V, 0402.
E5
E7
8
D
JP2X4-079
NOTES: UNLESS OTHERWISE SPECIFIED
D
D1
B220A
SENSE 3
DRIVE 1
BAT 2
9
B
A
U1
LTC4060EFE
3
1
4.5V
CHRG
LED2
LC1451C
2
2
ACPR
LED1
LN1351C
Q1
FDN306P
1
4.5V
R2
390K
2
1
R1
1
2
VIN(MIN)
VCC 14
CELLS
1
1
+VIN
GND
SHDN
1
+VIN
E1
GND
D
2
E2
17
+VIN
10V MAX
3
16
GND
4
A
DATE:
DC783A-1 * LTC4060EFE
Wednesday, June 30, 2004
2
SHEET 1
1
REV
A
OF 1
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