DC1176A - Schematic

5
4
3
2
1
PGood
E7
2
4.7M
GND
E5
Rfb3
412K, 1%
Rfb2
698K, 1%
Cout3
0.1uF
JP3
JP2
Opt.
3.3V
C
2
Rfb4
280K, 1%
1.8V
2.5V
1
1
3
7
Rsd
8
Rset
549K
E2
Rfb1
887K, 1%
1%
Rfb5
Opt.
Sync/Mode
Cffw
10pF
Opt.
4
2
Rs2
1M
R1
10K
Cout2
1uF
OFF ON
E4
L1
RPG RFB1
RSW CFFW
GND
GND
C1 COUT2
RC
CC
U1
COUT1
CIN2
CIN1
E6
B
Vout
1.8V / 2.5V / 3.3V
E3
1.25A
Cout4
Opt.
Cc
1000pF
Burst Mode
C
Rsw
Opt.
C1
Opt.
6.3V
6
1
Rc
16.2K
2.2uH
D1
Cout1
22uF
Opt.
3
Sy/Mode
10
SD/RT
2
9
Ith
PGND
Cbyp
Opt.
1
Vfb
SVin
4
2
PGood
7
11
JP1
8
100K
0
Rs1
1M
Pulse-Skip 3
SW
1
Rfilt
PVin
SGND
Cin1
10uF
6.3V
Cin2
1uF
Opt.
6
5
Cin3
Opt.
L1
Rpg
GND
VIN
E1
Cin4
47uF
16V
3
Vin
2.5V-5.5V
D
U1
LTC3411AEDD
5
D
B
RSET
PCB SILKSCREEN
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 SIGNIFICANTLYAFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
CONTRACT NO.
APPROVALS
DRAWN
DATE
June Wu
9/15/06
Tom Gross
9/15/06
CHECKED
TECHNOLOGY
TITLE
LTC3411AEDD
1.25A Monolithic Synchronous Buck Regulator
APPROVED
ENGINEER
SIZE
DESIGNER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
CAGE CODE
DWG NO
REV
A
DC1176A
Monday, July 14, 2008
SCALE:
2
FILENAME:
SHEET
1
A
1
OF
1
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