DC1267A - Schematic

5
4
3
2
1
REVISION HISTORY
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.
ECO
REV
DESCRIPTION
2
DATE
PROTO
APPROVED
02/05/08
D
D
DYNAMIC LOAD CIRCUIT
2
Q1
SUD50N03-10CP
TP1
1
3
IOSTEP_CLK
R1
10K
J1
R2
1
R3
L1
2
3
4
5
0.01
1.5uH
IOSTEP
10mV / A
51
C
C
E1
VIN
3V - 3.6V
10uF
6.3V
10uF
6.3V
RUN 3
ON
2
OFF
1
E2
GND
3 PROG
RLMT
44.2K
B
1
1%
CO1
+
2200uF
6.3V
CO2
+
2200uF
6.3V
CO3
+
2200uF
6.3V
CO4
+
OPT
6.3V
VOUT
4.0V / 2A
CO6
22mF
OPT
FB 2
PULSE LOAD
E4
GND
R5
CP
OPT
432K
1%
B
CONTRACT NO.
NOTES: UNLESS OTHERWISE SPECIFIED,
[1]
+
10uF
6.3V
1M
1%
OPT
JP1
CO5
R4
CFF
6 SHDN
GND
68uF
6.3V
CIN2
GND
[1]
CIN1
E3
VOUT 7
9
UP TO
500mA
4 VIN
+ C1
GND
SW 8
LTC3125EDCB
E5
CS 5
U1
FOR DEMO BOARD USE ONLY.
APPROVALS
DRAWN
A
MEI
DATE
05/17/07
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
A
TITLE
SCH, LTC3125EDCB, STEP-UP DC/DC REGULATOR
CHECKED
APPROVED
ENGINEER
DESIGNER
Monday, September 29, 2008
5
4
3
SIZE
CAGE CODE
DWG NO
REV
DC1267A
FILENAME:
SCALE:
2
1267A-2.DSN
2
1
SHEET
1
OF
1
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