DC1015A - Schematic

1
Rbm1
BM (BURST MODE)
5
6
SYNC
7
8
PS (PULSE-SKIP)
U1
MODE /SYNC
VIN
4V - 10V
E1
Cin1 *
6.8uF
20V
A
GND
E2
1 PVIN
2 PVIN
Cin
22uF
25V
Cin2
0.1uF
16V
(OPT)
Rpg
100K
INTVcc 3
BOOST 20
4 SYNC/MODE
Css
0.1uF
EXT SS 1
INT SS 3
TRACK 5
JP7
L1 2.2uH
IHLP-2525CZ-01
VISHAY
Cffw 10pF
Rfb5
105K
1%
Rset
105K
Rfb1
2
Rfb2
4
6
TRACK
TRACK
Rfb3
Rtr1
E8
Cout1
0.1uF
Cout
100uF
6.3V
E3
E4
21
PGND
GND
9
15
PGND
PGND
14
Cc
1000pF
PGND
Rc
4.32K
RT
Cc1
(OPT)
13
3
Rsd
4.7M
12
OFF
A
D1
(OPT)
VFB 8
6
1
7 ITH
JP5
2
PGOOD
Cst
1uF
CBst
0.22uF
SW 17
SW 16
11 TRACK/SS
ON
DBst
SW 19
SW 18
10 RUN
VOUT ENABLE
E7
LTC3602EUF
2
FC (FORCED CONTINUOUS)
4
1
E6
2
3
1
Cbm 0.1uF
10V (OPT)
JP6
2
1
GND
845K
PGOOD 5
Rbm2 137K
SYNC
2
255K
Rfb4
332K
1%
GND
GND
JP1
2.5V
475K
1%
JP2
768K
1%
JP3
(OPT)
JP4
Rtr2
200K
E5
VOUT
2.5A(max)
3.3V
5V
OPT
B
B
* CIN1 IS AN OPTIONAL CAPACITOR. IT IS INSERTED ON THE
DC1015A TO DAMPEN THE (POSSIBLE) RINGING VOLTAGE
DUE TO THE LONG INPUT LEADS. ON A NORMAL, TYPICAL
PCB, WITH SHORT TRACE, THE CAPACITOR IS NOT NEEDED,
1
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
CONTRACT NO.
APPROVALS
DRAWN
HELEN
DATE
1/28/08
CHECKED
APPROVED
ENGINEER Tom Gross
1/28/08
DESIGNER
Monday, April 14, 2008
TECHNOLOGY
TITLE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC3602EUF High Input Voltage 2.5A
Monolithic Synchronous Buck Regulator
SIZE CAGE CODE
SCALE:
FILENAME:
2
DWG NO
REV
A
DC1015A
SHEET
1
OF
1
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