DC1460A - Schematic

A
B
C
D
E
REVISION #
IS AN OPTIONAL CAPACITOR. IT IS INSERTED
*CIN1
ON THE DC1460A TO DAMPEN THE (POSSIBLE)
REVISION HISTORY
SD PC AD FD
RINGING VOLTAGE DUE TO THE LONG INPUT LEADS.
ON A NORMAL, TYPICAL PCB, WITH SHORT TRACES,
THE CAPACITOR IS NOT NEEDED.
DESCRIPTION
DATE
APPROVED
ChuenmingT
0
0 0 0
2
2
1
2
L1 from "LPS3010" to "LPS3008" series.
4/9/09
3
2
1
2
L1 from "LPS3008" to "LPS3010" series.
6/26/09 ChuenmingT
1st Release
4
4
E7
U1
LTC3620EDC
LOBATB
E1
8
VIN
2.8V - 5.5V
+
E2
PVIN
LOBATB
CIN
1uF
6.3V
CIN1
10uF
16V
*
SW
R2
715K
1%
4
SW
1
GND
7
RUN
NC
5
L1
E3
VOUT
22uH
COUT
LPS3010-223ML
1uF
6.3V
COUT1
0.1uF
3
RUN
FMIN/MODE
1
ON
SGND
2
2
3
OFF
GND
FB
3
6
22pF
PGND
RFB1
1.37M
1%
9
RFB4
1.65M
1%
RFB3
1.37M
1%
FMIN / MODE
CGND
RFB2
681K
1%
JP5
E6
E5
R1
1M
JP1
2
E4
CFFW
3
VOUT
15mA(max)
1
2
FREE RUN
3
4
EXTERNAL CLOCK
5
6
50kHz (MIN.)
JP4
1.1V
JP2
1.8V
JP3
1.2V
2
R3
1M
LINEAR TECHNOLOGY CORPORATION
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
ENGINEER: Tom Gross/Chuen MT
1630 McCARTHY BLVD
MILPITAS, CA. 95035
(408)432-1900
(408)434-0507 (FAX)
Title:
Date:
C
Tuesday, August 04, 2009
LTC Confidential For Customer Use Only
LTC3620EDC
High Efficiency Monolithic Buck Regulator
APPROVED:
CHECKED:
www.linear.com
SD
Document Number
C:\ORCADWIN\CAPTURE\1357A\1460A_REV3.DSN
D
Rev
Demo Circuit 1460A
Sheet
E
3
1
of
1
1
Similar pages