DC1548 - Schematic

REVISION HISTORY
ECO
REV
__
1
DESCRIPTION
PRODUCTION
E1
R3
400K
R4
3
4-26-10
VIN
7V - 28V
+ CIN1
22uF
50V
GND
4
MSD1278
U1
LT3757EDD
C14
50V
1210
ON
2
C12
100pF
R6
14K
C11
4.7nF
4
R7
42.2K
5
C13
3
VC
VIN
INTVcc
10
8
C10
4.7uF
10V
08054
FBX
RT
GATE
SYNC
SENSE
D1
PDS1045
5
6
7
8
3
1
SHDN/UVLO
Q1
Si7850DP
E3
7
6
SS
0.1uF
VOUT
-15V @ 1A
C3
22uF
25V
1210
1
2
3
9
GND
2
OFF
10uF
3
1
RUN
1
2
E5
JP1
GND
E4
11
SYNC
DATE
GEORGE Q.
E2
100K
VCC
C1
2.2uF
35V
1210
L1 15uH
1
2
APPROVED
E6
R5
0.02
1W
0815
R1
357K
1%
R8
10K
R2
20.0K
1%
GND
E7
CUSTOMER NOTICE
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN 0603.
ALL CAPACITORS ARE IN 0603.
2. INSTALL SHUNT AS SHOWN.
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.
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
HZ
GEORGE Q.
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
HIGH EFFICIENCY CUK CONVERTER
SIZE
N/A
SCALE = NONE
DATE:
IC NO.
REV.
LT3757EDD
1
DEMO CIRCUIT 1548A
Friday, August 13, 2010
SHEET 1
OF 1
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