DC502A - Schematic

5
4
3
2
D3
D
D2
CMDSH-3
OPT.
Vin
C8
0.1uF
L1
BOOST
2
VIN
8
SYNC
VSW
C
C1
2.2uF
25V
5
SYNC
FB
Vout
5V/3.3V@1A
Vout
3
CDRH5D18-5R4
E1
C6
TAJ
OPT.
D
CMDSH-3
U1
LT1767EMS8E 1
* 3V-25V
1
E2
R2
6
C7
0805
OPT.
31.6k
SHDN
GND
VC
4
7
C5
Vfb
C
100pF
OPT.
E4
R5
100k
OPT.
D1
UPS140
C3
6800pF
SHDN
R1
10.0k
C2
10uF
6.3V
C4
100pF
E5
R3
2.2k
GND
GND
E3
E6
EXPOSED PAD SOLDER TO GROUND
B
B
2
Vfb
Vout
JP1
1
3
5.0V 3.3V
* VIN
MINIMUM
A
39.2k
VOUT
CONTRACT NO.
6.6
5
4.5
3.3
3.5
2.5
DRAWN
3
1.8
CHECKED
APPROVALS
June Wu
DATE
2/12/02
See Quick-Start Guide.
ENGINEER
Keith S.
Tuesday, August 06, 2002
3
TITLE
A
DESIGNER
4
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LT1767EMS8E, 1.25MHz Wide Input Range Step Down DC/DC Converter
APPROVED
5
R4
2/12/02
SIZE CAGE CODE
DWG NO
REV
A
DC502A
SCALE:
FILENAME:
2
SHEET
1
1
OF
1