DC1610A - 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
100K
INTVcc
C1
R9
TRACK
E7
1
0 Ohm
JP5
TRACK
3
R10
(Opt)
13
SS
(SOFT-START)
1
C
15
16
INTVcc
SYNC
C6
(Opt)
MODE/SYNC
1
2
E8
(FORCED CONTINUOUS MODE) FCM
2
4
7
6
PGOOD INTVCC BOOST
C9
2200pF
BURST MODE
SYNC
2.2uF
16V
0603
U1
LTC3604EUD
2
D1
CMDSH-3TR
(Opt)
3
4
5
6
1210
C3
22uF
16V
1210
14
TRACK
SW
SW
MODE/SYNC
VON
PVIN
PVIN
FB
RUN
ITH
RT
3
4
8
17
12
9
+
GND
B
C4
47uF
6.3V
1210
VISHAY
R3
115K
1%
C5
10pF
RITH
CITH
14K
150pF
C7
(Opt)
1210
C10
(Opt)
1210
VOUT
1.2V/1.8V/3.3V @ 2.5A
E4
C
GND
E5
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
RON
11
JP6
VIN
4V - 15V
L1
1.0uH
IHLP-2020BZ-ER-1R0M01
0 Ohm
PGND SGND
10
C8
0.1uF
25V
0603
*
JP4
USER SELECT
C2
3.3uF
35V
RUN
E3
ON
1
2
2
3
OFF
ITH
FREQ
1
INTVcc
JP7
R8
1M
1
1MHz
B
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
*
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.
C2 IS AN OPTIONAL CAPACITOR. IT IS INSERTED
ON THE DC1610A 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.
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
LTC3604EUD
1
DEMO CIRCUIT 1610A
Monday, November 23, 2009
SHEET
1
1 OF 1
A
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