DC2133A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
_
2
PRODUCTION
APPROVED
JOSHUA Y.
DATE
10-14-14
SEE NOTE 3
D
E1
R1
1
5%
0805
6.5V - 60V
C1
1uF
1210
E2
R2
100K
2
4
6
8
EN
1
3
5
7
ON
REG
OFF
1
2
E3
R10
E11
100K
5%
PROG
GND
3
R4
3.01K
E4
4
5
NTCBIAS
10
BAT
EN
NTC
412K
7
CHRG
C
R8
8
E8
6
TIMER
GND
EXT
+
1
2
INT
NTC
JP5
TIMER
3
B
1
OFF
R6
100K
3
ON
CUSTOMER NOTICE
1. ALL RESISTORS ARE IN OHMS, 1%, 0603.
ALL CAPACITORS ARE IN MICROFARADS, 0603.
2. VBAT SET BY JP4. DO NOT CHANGE JP4
WITH VIN APPLIED.
3. OPTIONAL CIRCUIT FOR EVALUATION
WITHOUT BATTERY.
5
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
TECHNOLOGY
TIMER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
A
60V LINEAR CHARGER WITH LOW QUIESCENT CURRENT
SIZE
IC NO.
DATE:
REV.
LTC4079IDD
N/A
SCALE = NONE
B
CTMR
.068uF
LT
JOSHUA Y.
E9
ON
APPROVALS
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
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
4
LED
OFF
2
JP3
NOTES: UNLESS OTHERWISE SPECIFIED
R9
12K
.5W
1210
LED1
- GRN
1
JP2
E10
CHRG
VIN
R5
100K
NTC
A
2
11
E5
3
GND
9
FBG
NTCBIAS
4.2V
E7
SEE NOTE 2
FB
PROG
1
SEE NOTE 2
3
C
IN
8.4V
JP4
C3
1uF
1210
D
BAT
100mA
C2
6.8uF
1210
VBAT
U1
LTC4079IDD
JP1
R11
12K
5%
0805
R7
1.07Meg
0805
2
GND
R3
768K
0805
R12
2.55Meg
0805
GND
VIN
E6
VIN
2
DEMO CIRCUIT 2133A
Tuesday, October 14, 2014
SHEET 1
2
1
OF 1
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