DC1221A - Schematic

Vout
3.3V/500mA
GND
L1
VOUT
R4
0
E2
U1
LT3502EDC
VIN
Vin
5V-40V
1
E3
VOUT
+ C4
10uF
50V
opt.
15uH
C1
22uF
6.3V
E1
C3
1uF
50V
C5
opt.
R1
31.6K
VIN
2
BD
3
FB
4
SHDN
EXPOSED
PAD
GND
GND
SW
8
BOOST
7
DA
6
GND
5
C2
0.1uF
16V
D1
PMEG4005AEA
9
E4
R2
10.0K
VIN
R3
1
JP1
RUN/SS
ON
22K
2
OFF
C6
opt.
3
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.
E5
CONTRACT NO.
APPROVALS
DRAWN
DATE
J. Wu
4/18/07
M. Zhu
4/18/07
CHECKED
TECHNOLOGY
TITLE
DESIGNER
LT3502EDC
40V, 500mA, 1.1MHz Buck Regulator in 2x2 DFN
APPROVED
ENGINEER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SIZE CAGE CODE
Thursday, April 19, 2007SCALE:
FILENAME:
DWG NO
REV
DC1221A
SHEET
A
1
OF
1
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