DC1611A - Schematic

5
4
3
2
1
REVISION HISTORY
PGOOD
E6
D
ECO
REV
1
1
DESCRIPTION
PRODUCTION
APPROVED
DATE
TOM G.
11-23-09
INTVcc
E1
D
R1
INTVcc
100K
C1
D1
CMDSH-3TR
(Opt)
2.2uF
16V
R9
TRACK
E7
1
0 Ohm
JP5
TRACK
3
R10
(Opt)
U1
LTC3604EMSE
2
4
C9
2200pF
SS
(SOFT-START)
C
SYNC
C6
(Opt)
1210
MODE/SYNC
1
2
E8 (FORCED CONTINUOUS MODE) FCM
6
3
4
5
6
C3
22uF
16V
1210
TRACK
15
MODE/SYNC
12
5
INTVCC
11
13
14
INTVcc
BURST MODE
SYNC
16
PGOOD
C8
0.1uF
25V
BOOST
SW
SW
1
2
VON
7
PVIN
PVIN
FB
RUN
ITH
3
4
10
17
+
C10
(Opt)
1210
C7
(Opt)
1210
VOUT
[email protected]
E4
C
GND
E5
RITH
CITH
14K
150pF
GND
E9
CC
R4
115K
1%
R5
57.6K
1%
R6
25.5K
1%
JP1
1.2V
JP2
1.8V
JP3
3.3V
R7
(Opt)
22pF
(Opt)
R11
324K
1%
E2
C4
47uF
6.3V
1210
R3
115K
1%
C5
10pF
9
RT SGND SGND PGND
8
VIN
VISHAY
RON
0 Ohm
JP6
4V - 15V
L1
1.0uH
IHLP-2020BZER1R0M01
*
JP4
USER SELECT
C2
3.3uF
35V
GND
E3
B
B
RUN
ON
1
2
2
3
OFF
ITH
FREQ
1
INTVcc
JP7
R8
1M
1
1MHz
EXT
2
3
JP8
2MHz
(Int.)
INTVcc
3
INT
JP9
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 0402
ALL CAPACITORS ARE IN MICROFARADS, 0402
CUSTOMER NOTICE
2. INSTALL SHUNTS AS SHOWN.
A
*
C2 IS AN OPTIONAL CAPACITOR. IT IS INSERTED
ON THE DC1454A TO DAMPEN THE (POSSIBLE)
RINGING VOLTAGE DUE TO THE LONG INPUT LEADS.
ON A NORMAL, TYPICAL PCB, WITH SHORT TRACES,
THE CAPACITOR IS NOT NEEDED.
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.
CONTRACT NO.
APPROVALS
ENG.
TOM G.
4
3
TITLE: SCHEMATIC
2.5A MONOLITHIC SYNCHRONOUS BUCK REGULATOR
SIZE
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
TECHNOLOGY
PCB DES. ANTONINA K.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
2
IC NO.
REV
LTC3604EMSE
1
DEMO CIRCUIT 1611A
Friday, January 22, 2010
SHEET
1
1 OF 1
A
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