DC1283A - Schematic

A
B
C
D
E
4
4
U1
LTC3025EDC-1
Vin
0.9V - 5.5V
GND
E1
3
*
CIN
1uF
6.3V
CIN1
+
10uF
25V
E2
VIN
1
BIAS
6
ENABLE
OUT
4
E3
GND
2
FB
5
GND
BIAS
E5
3
7
C1
1uF
6.3V
Vout Enable
1
ON
2
OFF
3
JP5
R5
40.2K
1%
0.8V
JP1
1.2V
JP2
R1
40.2K
1%
R2
40.2K
1%
1.5V
JP3
1.8V
JP4
COUT
1uF
6.3V
COUT1
1uF
6.3V
(Opt)
+
COUT2
100uF
10V
(Opt)
E4
R4
30.1K
1%
R3
30.1K
1%
E6
Vout
500mA (max)
GND
GND
3
PCB Layout
R6
10M
R5
C1
R1
2
2
U1
*
CIN1 is an optional capacitor. It is inserted on the DC1283A to
dampen the (possible) ringing voltage due to the use of long
input leads. On a normal, typical PCB, with short traces,
CIN1 is not needed.
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
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1
A
B
CIN
CONTRACT NO.
APPROVALS
DRAWN
DATE
AntoninaK
5/17/07
Tom Gross
5/17/07
CHECKED
APPROVED
ENGINEER
DESIGNER
Tuesday, July 31, 2007
C
TECHNOLOGY
TITLE
COUT
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC3025EDC-1
VLDO Linear Regulator
SIZE CAGE CODE
SCALE:
FILENAME:
D
DWG NO
1
REV
DC1283A
SHEET
A
1
E
OF
1
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