DC1122A - Schematic

1
2
RUN JP1
1
3
OFF ON
2
R14
100K
C21
3.3V
A
E2
3.3V
C14
1uF
50V
0.1uF
50V
C13
22uF
50V
U1
LT3681EDE
R10
100K
PGOOD
VIN
3.3V
R9
165K
R6
102K
R11
12.7K
C17
1000pF
1 PGOOD
2 BIAS
3 FB
4 GND
5 VC
6 RT
R7
105K
E1
VIN
4.5V-34V
3.3V
SD 14
VIN 13
SW 12 C10
BOOST 11
BD 10
7 GND
A
GND
E4
L1
0.47uF
4.7uH
C15
22uF
10V
PDC 9
PDA 8
C20
1uF
E3
VOUT
[email protected]
E5
GND
B
B
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
CONTRACT NO.
APPROVALS
DRAWN
DATE
Helen
11/20/06
WEI GU
11/20/06
CHECKED
TECHNOLOGY
TITLE
APPROVED
ENGINEER
DESIGNER
Friday, May 18, 2007
LT3681EDE
STEP-DOWN REGULATOR
SIZE CAGE CODE
SCALE:
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
DWG NO
FILENAME:
2
REV
A
DC1122A
SHEET
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