DC1797A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DESCRIPTION
APPROVED
DATE
__
2
PRODUCTION FAB
VICTOR K.
04-11-11
D
D
E1
VIN
E3
VIN
1.8V - 5.5V
E2
GND
U1
C
R5
OPT
E5
R6
100k
E6
LTC3536EDD
VIN
MODE
1
BURST MODE
2
3
FIXED FREQ
JP1
SW2 5
7 VIN
VOUT 6
3 MODE/SYNC
FB 9
1 RT
VC 10
SHDN 8
C
R4
C7
49.9K
220pF
R2
220K
1%
C8
OPT
VIN
RUN
ON
R8
1 Meg
OFF
B
1
2
3
JP2
R7
1 Meg
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.
A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE 0402 AND CAPACITORS ARE 0603.
2. INSTALL SHUNTS AS SHOWN.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
E4
R3
6.49K
GND
B
C4
1uF
10V
GND
4 SW1
2 SGND
SYNC
C3
22uF
6.3V
R1
1 Meg
1%
C5
47pF
L1
XFL4020 - 472
4.7uH
PGND
C1
10uF
10V
11
C6
OPT
+
VOUT
3.3V / 1A
C2
1uF
10V
4
3
APPROVALS
TECHNOLOGY
PCB DES.
NC
APP ENG.
VICTOR K. TITLE: SCHEMATIC
SIZE
N/A
SCALE = NONE
2
DATE:
IC NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
1A LOW NOISE, WIDE VIN
BUCK-BOOST DC / DC CONVERTER
LTC3536EDD
DEMO CIRCUIT 1797A
04-11-11
SHEET 1
1
REV.
2
OF
1
A
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