DC1566A - Schematic

A
B
C
D
E
REVISION #
REVISION HISTORY
SD PC FD AD
0
DESCRIPTION
0 0 0
DATE
APPROVED
1st Release
4
4
U1
LT3970EMS
VIN
6V - 40V
L1
22uH
CDRH4D22/HPNP-220MC
VIN
E3
3
C4
+ 10uF
50V
C3
1uF
50V
0805
E4
GND
3
VOUT
R6
VIN
6
9
PG
BOOST
7
2
EN
BD
8
4
GND
FB
1
5
GND
RT
10
200k
0402
E6
SW
C2
0.1uF
0402
R1
1.00M
1%
E1
C1
22uF
6.3V
0805 E2
C5
22pF
VOUT
5V / 350mA
GND
3
R2
316K
1%
R5
226k
1%
(600kHz)
GND
11
PG
VOUT
E5
EN
VIN
2
1
ON
R7
(Opt)
2
2
3
OFF
R8
(Opt)
JP1
CONTRACT NO.
APPROVALS
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice: Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
1
A
B
DRAWN Rudy Bautista
DATE
04/14/09
CHECKED
TECHNOLOGY
TITLE:
APPROVED
ENGINEER Molly Zhu
DESIGNER
SIZE
C
www.linear.com
LTC Confidential For Customer Use Only
LT3970EMS
40V 350mA Step-Down Regulator with
2.5uA Quiescent Current and Integrated Diodes
CAGE CODE
DWG NO
SD
Tuesday, July 28, 2009
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
FILENAME:
C:\ORCADWIN\CAPTURE\1566A\1566A_REV0.DSN
D
REV
Demo Circuit 1566A
SHEET
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