DC1551 - Schematic

A
B
C
D
E
REVISION HISTORY
ECO
REV
DESCRIPTION
-
2
PRODUCTION FAB
APPROVED
JIM N.
L1
4
2.2uH
7
3
C7
47uF
10V
+
C6
OPT
C5
1uF
R4
1M
8
15
16
SW2
SW2
1
VOUT
2
RUN
FB
R3
6.49K
RT
VC
C2
100uF
6.3V
C8
680pF
R5
49.9K
9
R7
182K
1%
C9
10pF
C4
100uF
6.3V
OPT
C3
1uF
C10
100uF
6.3V
OPT
3
OPTIONAL FOR PULSED LOAD
APPLICATIONS
GND
GND
4
R2
825k
1%
10
BURST
R1
90.9k
1%
E4
VOUT1
PGND
11
VIN
VIN
VIN
17
3
4
5
SGND
VIN
6
E3
VIN
1.8V - 5.5V
SW1
SW1
SW1
LTC3113EDHD
C1
47pF
11-02-10
VOUT
3.3V / 3A
E1
VOUT
12
13
14
U1
DATE
E2
GND
PWM
2
ON
1
2
3
OFF
JP2
R6
1
2
3
BURST MODE
FIXED FREQ
1
1. ALL RESISTORS ARE IN
OHMS, 0402.
2. INSTALL SHUNTS
AS SHOWN.
A
2
1.0M
JP1
CUSTOMER NOTICE
NOTE: UNLESS
OTHERWISE
SPECIFIED
VIN
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
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.
B
TECHNOLOGY
NC
JIM N.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
3A LOW NOISE BUCK - BOOST DC / DC CONVERTER
SIZE
IC NO.
N/A
SCALE = NONE
C
DATE:
REV.
LTC3113EDHD
DEMO CIRCUIT 1551A
11-02-10
2
SHEET
D
1
E
1
OF
1
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