DC1661A - Schematic

B
A
REVISION HISTORY
ECO
17
APPROVED
DATE
JESUS R.
12-06-10
4
VOUT
E1
C6
100pF
R5
10K
12V, 3.5A
Q2
Si7141DP
GATE
2
GND
RT
R12
6.3K
5
6
7
8
C5
4.7uF
16V
1206
VIN
R7
86.6K
C7
0.1uF
R8
100K
1
21
20
CLKOUT
E4
VC
SS
16
OFF
11
12
13
14
15
LT3579EFE-1
SYNC
R6
10K
0805
FB
C4
22uF
25V
1210
C3
22uF
25V
1210
R4
64.9K
0805
SW2
SW2
SW2
SW2
SW2
U1
SHDN
CLKOUT
OUTPUT
1
10
9
8
7
6
GATE
18
2
FAULT
SW1
SW1
SW1
SW1
SW1
3
GATE
1
2
3
19
R1
22.1K
0805
FAULT
R3
100K
4
5
R2
OPT
C15
4.7uF
16V
1206
PRODUCTION
D1
MBRM560
VIN
J2
C2
4.7uF
16V
1206 VIN
VIN
DESCRIPTION
3
L1
IHLP-2525CZER2R2M01
SYNC
GND
C1
4.7uF
16V
1206
5
6
7
8
4
J1
VIN2
1
2
3
VIN
5V-10V
__
Q1
OPT
VIN
REV
D3
OPT
C8
4.7nF
2
ON
2
GND
E2
3
L2
VIN2
IHLP-2525CZER2R2M01
JP1
VIN
D2
MBRM560
3
17
FAULT
GATE
FB
C12
0.1uF
1
1
GND
R9
86.6K
CUSTOMER NOTICE
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN 0402.
ALL CAPACITORS ARE IN 0402.
R14
0
R15 OPT
R16
10K
OPT
C13
OPT
C14
OPT
1
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.
TECHNOLOGY
A.K.
JESUS R.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
TWO BOOST REGULATORS IN PARALLEL
IC NO.
DATE:
REV.
LT3579EFE-1, LT3579EFE
N/A
SCALE = NONE
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
SIZE
2. INSTALL SHUNTS AS SHOWN.
B
C9
22uF
25V
1210
2
21
SS
RT
18
CLKOUT
VC
19
E3
CLKOUT
20
16
SYNC
LT3579EFE
CLKOUT
C10
22uF
25V
1210
11
12
13
14
15
U2
SHDN
R13
0
SW2
SW2
SW2
SW2
SW2
4
SW1
SW1
SW1
SW1
SW1
10
9
8
7
6
FAULT
5
R17
OPT
0805
C11
4.7uF
16V
1206
VIN
VIN2
3
DEMO CIRCUIT 1661A
Wednesday, February 23, 2011
A
SHEET 1
OF 1
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