5
dc2133afa
DEMO MANUAL DC2133A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
ALL CAPACITORS ARE IN MICROFARADS, 0603.
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 1%, 0603.
GND
NTC
BAT 100mA
GND
VIN
6.5V - 60V
CHRG
TIMER
NTCBIAS
PROG
5%
.5W
5%
5%
REG
GND
EN
ON
OFF
2. VBAT SET BY JP4. DO NOT CHANGE JP4
WITH VIN APPLIED.
GND
3. OPTIONAL CIRCUIT FOR EVALUATION
WITHOUT BATTERY.
SEE NOTE 3
SEE NOTE 2
SEE NOTE 2
VIN
VIN
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
LTC4079IDD
Tuesday, October 14, 2014
1
1
60V LINEAR CHARGER WITH LOW QUIESCENT CURRENT
LT
JOSHUA Y.
N/A
DEMO CIRCUIT 2133A
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
LTC4079IDD
Tuesday, October 14, 2014
1
1
60V LINEAR CHARGER WITH LOW QUIESCENT CURRENT
LT
JOSHUA Y.
N/A
DEMO CIRCUIT 2133A
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
Milpitas, CA 95035 Phone: (408)432-1900
1630 McCarthy Blvd.
LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
2
LTC4079IDD
Tuesday, October 14, 2014
1
1
60V LINEAR CHARGER WITH LOW QUIESCENT CURRENT
LT
JOSHUA Y.
N/A
DEMO CIRCUIT 2133A
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JOSHUA Y.
PRODUCTION
2
10-14-14
_
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JOSHUA Y.
PRODUCTION
2
10-14-14
_
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
JOSHUA Y.
PRODUCTION
2
10-14-14
_
C2 6.8uF 1210
C2 6.8uF 1210
R5 100K
R5 100K
R11 12K
0805
R11 12K
0805
R10
100K
R10
100K
E7E7
R8
412K
R8
412K
E9E9
R1 1
0805
R1 1
0805
C1 1uF 1210
C1 1uF 1210
JP3
ON
OFF
TIMER
JP3
ON
OFF
TIMER
1
3
2
JP4
8.4V
4.2V
VBAT
JP4
8.4V
4.2V
VBAT
1
3
2
E4E4
E2E2
E10E10
E6E6
E8E8
JP2
EXT
INT
NTC
JP2
EXT
INT
NTC
1
3
2
JP5
ON
OFF
LED
JP5
ON
OFF
LED
1
3
2
R6 100K
R6 100K
CTMR .068uF
CTMR .068uF
E11E11
R7 1.07Meg 0805
R7 1.07Meg 0805
C3 1uF 1210
C3 1uF 1210
-
+
LED1 GRN
-
+
LED1 GRN
U1
LTC4079IDD
U1
LTC4079IDD
NTCBIAS
4
IN
1
BAT
10
FB
9
FBG
8
CHRG
7
EN
2
PROG
3
TIMER
6
NTC
5
GND
11
R3 768K 0805
R3 768K 0805
R4 3.01K
R4 3.01K
R9 12K
1210
R9 12K
1210
E1E1
JP1JP1
1 3 5
6
4
2
7
8
R12 2.55Meg 0805
R12 2.55Meg 0805
E3E3
E5E5
R2 100K
R2 100K
