DC1852A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
1
DESCRIPTION
PRODUCTION
APPROVED
DATE
VICTOR K.
07-13-11
D
D
VIN
E1
E3
VIN
VOUT
3.3V / 1A
1.8V - 5.5V
+
C6
OPT
C1
10uF
10V
0805
E2
C2
1uF
10V
0603
L1
XFL4020 - 472
4.7uH
GND
U1
LTC3536EMSE
R6
R5
8
100k
OPT
E5
9
3
SYNC
1
E6
2
SW1
SW2
VIN
VOUT
VIN
FB
MODE/SYNC
VC
RT
SGND
C4
1uF
10V
0603
E4
GND
SHDN
PGND
6
C
7
11
12
R4
C7
49.9K
220pF
10
R2
220K
1%
5
C8
OPT
13
GND
C9
OPT
1206
R3
6.49K
PGND
4
C
C3
22uF
6.3V
1206
R1
1 Meg
1%
C5
47pF
VIN
MODE
BURST MODE
FIXED FREQ
B
1
2
3
JP1
R8
1 Meg
B
VIN
RUN
ON
OFF
1
2
3
R7
1 Meg
JP2
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
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.
A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS AND CAPACITORS ARE 0402.
2. INSTALL SHUNTS AS SHOWN.
TECHNOLOGY
LT
4
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
VICTOR K. TITLE: SCHEMATIC
1A, LOW NOISE, BUCK-BOOST REGULATOR
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
APPROVALS
IC NO.
N/A
SCALE = NONE
2
DATE:
REV.
LTC3536EMSE
DEMO CIRCUIT 1852A
07-13-11
1
SHEET
1
1
OF
1
A
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