DC1736A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
_
2
DESCRIPTION
PRODUCTION
APPROVED
DATE
MOLLY Z.
05-22-12
D
D
L1
3.3uH
+ C4
100uF
50V
C3
10uF
50V
1210
GND
E4
SUNCON
50CE100BS
NC
C6
10nF
5
SW 6
SW 7
SW
4
BOOST
3
OUT
1
FB
16
SYNC
14
RT
9
8
D1
PDS360
VOUT
R1
1.00M
1%
C5
10pF
C1
47uF
10V
1210
C7
1uF
16V
0603
R2
576k
1%
R5
78.7k
1%
(600kHz)
C
17
C2
0.47uF
0603
IHLP2020CZER3R3M01
2
3
E3
NC
10
11 VIN
12 VIN
VIN
15
PG
13
EN
2
SS
VIN
GND
VIN
4.3V - 42V
1
U1
LT3975EMSE
3
2
1
E1
VOUT
3.3V / 2.5A
E2
GND
E7
SYNC
C
JP2
SYNC
RT FREQ
R6
200K
PG
E6
EN
E5
JP1
ON
B
OFF
1
2
3
R7
OPT
0603
B
R8
OPT
0603
CUSTOMER NOTICE
NOTES: UNLESS OTHERWISE SPECIFIED
A
1. ALL RESISTORS ARE 0402.
ALL CAPACITORS ARE 0402.
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
JW
MOLLY Z.
TITLE: SCHEMATIC
5
4
3
IC NO.
N/A
SCALE = NONE
A
42V, 2.5A, 2.7m A MICROPOWER BUCK REGULATOR
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
REV.
LT3975EMSE
2
DEMO CIRCUIT 1736A
DATE:
Monday, June 18, 2012
2
SHEET 1
1
OF 1
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