DC1853A - Schematic

A
B
C
D
ECO REV
VOUT+
E
REVISION HISTORY
DESCRIPTION
APPROVED
1
1st PROTOTYPE
ZHONGMING Y.
2
PRODUCTION
ZHONGMING Y.
3
L1 (2.2µH to 3.3µH)
ZHONGMING Y.
DATE
Aug. 12, 2011
June 08, 2012
September 04, 2012
4
4
C14
(OPT)
R3
102k
1%
1
2
3
30
31
C6
18nF
C5
120pF
3
R5
10.5k
1%
32
R4
15.8k
1%
33
C7
0.33µF
34
R6
27.4k
1%
E6
SYNC
NC
NC
NC
35
100k
1%
JP2
EN/UVLO
FBX
VIN
2
INTVCC
PGOOD
VIN
2
2V-10V
VIN
E1
L1
E9
+
E2
C4
68µF
16V
C2
22µF
16V
1210
(OPT)
3.3µH
DR74-3R3-R
13
14
R1
332k
1%
C13
(OPT)
SGND
SGND
SGND
GNDK
SW
SW
SW
SW
SW
GND
GND
GND
GND
GND
RUN
E5
ENABLE
27
E8
SGND
36
C8
4.7µF
10V
3
37
24
4
12
28
38
21
20
*
0.5A
1.0A
2.0A
SW
8
9
R2
200k
1%
VIN
SW
E10
PGOOD
3
25
SYNC
DRIVE
3
OFF
6
10
23
SS
RT
SHDN
2
VC
1
ON
1
NC
NC
NC
VIN
R7
JP1
U1
LT3959EUHE
VOUT+
D1
DFLS230LH
C9
22µF
16V
1210
17
16
15
C10
22µF
16V
1210
C11
22µF
16V
1210
Vin
Vin
Vin
E4
C12
22µF
16V
1210
2.0V
5.0V
9.0V
VOUT
12V
*
E3
GND
2
C1
22µF
16V
1210
GND
E7
CUSTOMER NOTICE
1
NOTE: UNLESS OTHERWISE SPECIFIED.
1. ALL RESISTORS 0603.
2. ALL CAPACITORS 0603.
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.
RB
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG. ZHONGMING Y.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
B
C
TECHNOLOGY
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
1
WIDE INPUT VOLTAGE RANGE BOOST CONVERTER
IC NO.
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
TITLE: SCHEMATIC
SIZE
C:\PADS PROJECTS\1853A\SCH\1853A_REV3.DSN
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
A
APPROVALS
MODIFY DATE: September 04, 2012
D
REV.
LT3959EUHE
DEMO CIRCUIT 1853A
3
SHEET
E
1
OF
1
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