DC1725A - Schematic

5
4
3
2
1
REVISION HISTORY
E1
ECO
VIN
VIN
REV
DESCRIPTION
2
PRODUCTION
J1
DATE
APPROVED
08/04/11 ZHONGMING Y.
VIN
CIN1
1.8V - 4.5V
CIN2
100uF
6.3V
D
J2
+
1210
1210
GND
CIN3
100uF
6.3V
270uF
10V
D
VIN
E2
GND
VIN
D1
L1
2
E7
U1
2.2uH
3
C1
R2
C2
C3
22nF
R3
0.1uF
5.1k 1%
SYNC
3
1
ON
Q1
8
1
SENSE
15.8k
1%
4
5
RT
SYNC
FBX
100uF
6.3V
1210
100uF
6.3V
1210
E4
C
VOUT
7
R5
0815
2
6
100k
1%
E6
PG
PGOOD
13
PGOOD
CO2
RCS1
0.005
4
CO1
GND
SS
VC
RFBA
VOUT
5V / 2.0A
RFBB
INTVCC
GATE
VOUT
34k
1%
Si7858ADP
R4
SYNC
10
C4
120pF
E5
DRIVE
4.7uF 0805
9
887k
1%
JP1
EN_UVLO
1
2
3
OFF
C
12
SBR3U20SA
5
2
1
VOUT
VIN
1
ON
LT3759EMSE
348k
1%
GND
EN
11
R1
EN
B
E3
16.9k 1%
B
2
OFF
3
JP2
CUSTOMER NOTICE
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.
MI
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.
A
TECHNOLOGY
TITLE: SCHEMATIC
LOW INPUT VOLTAGE BOOST CONVERTER
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
N/A
SCALE = NONE
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
LT3759EMSE
IC NO.
REV.
DEMO CIRCUIT 1725A
DATE: Tuesday, November 08, 2011
2
SHEET 1
1
2
OF 1
A
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