DC862A - Schematic

5
E2
C1
+ C6
47uF
10V
GND
C5
0.22uF
C2
2.2uF
1.0uF
E4
1
2
Vin
Vout
6
C+
GND
4
SHDN/FB
C-
Vout
C3
C7
*
R1
4.7uF
3
E1
R3
GND
*
*
GND
E3
Vin
7
2
R2
*
C4
0.22uF
*
1
*
Vin
*
*
*
JP1
Vout
ON
OFF
3
U1
Vin
VERSION TABLE
Vout/Iout(max)
ASSEMBLY VERSION
U1
Vin
DC862A-A
LTC3221EDC-3.3
1.8V-4.4V
3.3V/60mA
DC862A-B
LTC3221EDC-5
2.7V-5.5V
DC862A-C
LTC3221EDC
1.8V-3.8V
**
R2
R3
R1
C7
JP1
3.32M
DO NOT INSTALL
INSTALL
5.0V/60mA
3.32M
DO NOT INSTALL
INSTALL
3.0V/60mA
107K
154K
0 OHM
220pF
DO NOT INSTALL
** See Quick Start Guide for Vin requirements to generate Iout(max).
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.
CONTRACT NO.
APPROVALS
DRAWN
DATE
June Wu
12/29/04
Julian Zhu
12/29/04
CHECKED
TECHNOLOGY
TITLE
DESIGNER
LTC3221EDC-3.3 / LTC3221EDC-5 / LTC3221EDC
Micropower Regulated Charge Pump DC/DC Converter
APPROVED
ENGINEER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SIZE CAGE CODE
Wednesday, August 02, 2006
SCALE:
FILENAME:
DWG NO
REV
A
DC862A
SHEET
1
OF
1
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