DC1667A - Schematic

A
B
C
D
E
REVISION HISTORY
JP1
R1
0.8V
16.2K
1%
R2
1.2V
JP3
24.3K
1%
R3
1.8V
JP5
35.7K
1%
R4
JP2
4
INT
(OPT)
C5
0.01uF
2
3
1
4
R6
56K
C2
(OPT)
C1
68pF
ISET
PGOOD
ITH
VOUT
12
RT
INTVCC
PGOOD
INTVCC
R8
(OPT)
BOOST
E2
INTVCC
C3
4.7uF
9
VIN
E3
5
6
R9
36.5K
1%
PGFB
0 Ohm
0805
10
RUN
VIN
MODE/SYNC
SW
8
VIN
4.5V - 15V
7
CIN2
22uF
16V
1210
C4
0.1uF
GND
L1
2.2uH
IHLP-2020CZ-ER-2R2M01
VISHAY
*
E5
(OPT)
COUT2
(OPT)
1210
C6
(OPT)
0805 E6
COUT3
(OPT)
1210
2
NOTES:
VIN
ON
1
3
JP9
RSD
1M
INTVCC MODE/SYNC
1
2 CCM
3
4 DCM
6 SYNC
5
E7
VOUT
1
NOTE: UNLESS OTHERWISE SPECIFIED.
0.8V
1.2V
1.8V
3.3V
R10
30.1k 1%
30.1k 1%
30.1k 1%
30.1k 1%
OPT
R11
90.9k 1%
30.1k 1%
15.0k 1%
6.81k 1%
OPT
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.
DEFAULT
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
RB
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
B
C
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900www.linear.com
Fax: (408)434-0507
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
TITLE: SCHEMATIC
JEFF Z.
4.5-15VIN, 1.5A MONOLITHIC BUCK REGULATOR
SIZE
1. ALL RESISTORS 0402.
2. ALL CAPACITORS 0402.
A
*
CUSTOMER NOTICE
JP10
SYNC
2
1. PGOOD FUNCTION REQUIRES R10 AND R11 BEING
STUFFED ACCORDING TO THE FOLLOWING TABLE.
2
OFF
VOUT
0.8V - 3.3V
@1.5A
GND
R11
(OPT)
RUN
E4
VOUT
COUT1
47uF
6.3V
1210
VOUT
R10
*
3
GND
2
JP8
CIN1
+ 3.3uF
35V
(OPT)
CIN3
22uF
16V
(OPT)
13
PGOOD
1
3
04/06/11
R12
11
INTVCC
EN
JEFF Z.
R7
100K
INTVCC
JP7
DIS
02/24/11
E1
1
3
3
LTC3600EDD(UPDATE PIN NAMES: 1, 2 & 6)
VALUE CHANGE: R9 from 39k to 36.5k.
DATE
JEFF Z.
INTVCC
2
EXT
APPROVED
DESCRIPTION
PRODUCTION
U1
LTC3600EDD
INTVCC
COMP
2
4
R5
USER SELECT
REV
-
3
66.5K
1%
3.3V
JP6
ECO
N/A
SCALE = NONE
DATE:
D
IC NO.
REV.
LTC3600EDD
DEMO CIRCUIT 1667A
Friday, November 18, 2011
3
SHEET 1
E
OF 1
1
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