DC1037A - Schematic

5
4
3
2
1
D
D
VOUT ENABLE
SHUTDOWN
TOKO D52LC
R1
OPT
VIN
C2
1uF
50V
1206
X7R
+ C1
10uF
50V
7
C5
OPT
0603
C
NC
9
E2
GND
E3
VOUT
[email protected]
VSW 4
BIAS 2
GND
6
C4
22uF
6.3V
1206
X5R
U1
LT3470EDDB
GND
E1
VIN
5.5V-40V
SHDN 8
BOOST 3
X5R
FB 1
C6
22pF
NPO
R3
200k
1%
5
C
L1
33uH
C3
0.22uF
JP1
R2
604k
1%
B
B
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE 0402.
A
2. INSTALL SHUNT ON JP1 (1&2).
CUSTOMER NOTICE
CONTRACT NO.
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
CIRUIT 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.
5
4
3
APPROVALS
DRAWN:
TECHNOLOGY
KIM T.
CHECKED:
TITLE: SCHEMATIC
DESIGNER:
A
40V MICROPOWER DFN BUCK REGULATOR
APPROVED:
ENGINEER: KEITH S.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
WITH INTEGRATED BOOST AND CATCH DIODES
SIZE
DWG NO.
A
DC1037A-1 * LT3470EDDB
Wednesday, February 01, 2006
DATE:
2
SHEET
1
REV
A-1
1 OF 1
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