DC1341A - Schematic

R3
215K
C1
6.8uF
50V
L1
6.8uH
R4
+ CIN1
10uF
63V
E2
100K
E5
ON
OFF
2
3
C12
100pF
R6
10.5K
C11
10nF
R7
42.2K
C13
SHDN/UVLO
1
VC
2
FBX
4
RT
5
SYNC
3
SS
VIN
INTVcc
10
Opt.
8
Q1
SI7850DP
C10
4.7uF
10V
GATE
7
SENSE
6
SYNC
PDS1045
L2
6.8uH
4
C3
100uF
6.3V
123
C4
100uF
6.3V
C5
100uF
6.3V
E3
E4
R5
0.01
1W
VOUT
5V @ 3A
GND
R1
42.2K
1%
E6
R8
10K
GND
GND
5678
11
0.1uF
C8
9
VIN
4.5V - 36V
D1
10uF
50V
10uF
50V
GND
JP1
RUN
C7
U1
LT3757EDD
1
VCC
E1
R2
20.0K
1%
E7
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.
CONTRACT NO.
APPROVALS
DRAWN
ENGINEER
DATE
J. Wu
10/3/07
W. Gu
10/3/07
TECHNOLOGY
TITLE
Friday, January 30, 2009
LT3757EDD
High Efficiency SEPIC Converter
CHECKED
APPROVED
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SIZE CAGE CODE
SCALE:
FILENAME:
DWG NO
REV
DC1341A
SHEET
1
A
OF
1
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