DC1749A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
_
2
DESCRIPTION
APPROVED
DATE
PRODUCTION
WALKER B.
03-26-12
D
D
GND
U1
LT8610EMSE
VIN
E1
+ C1
22uF
63V
E2
C2
4.7uF
50V
1206
R1
1M
5
SUNCON
63CE22BS
R6
OPT
6
4
EN/UV
E6
1
SYNC
E5
3
2
1
SYNC
GND
C
13
JP1
2
C7
1uF
0603
25V
GND
3
R2
60.4k
E9
7
8
VIN
BST
EN/UV
SW
SYNC
SW
INTVCC
SW
TR/SS
BIAS
RT
PG
PGND
FB
PGND
FB1
B
VEMI
C3
4.7uF
50V
1206
11
VOUT
E3
C6
47uF
10V
1210
14
E4
10
GND
C
R3
15
R4
16
49.9k
1Meg
R5
412k
C5
4.7pF
PG
B
C10
4.7uF
50V
1206
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
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
3
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
WALKER B. TITLE: SCHEMATIC
IC NO.
DATE:
REV.
LT8610EMSE
N/A
SCALE = NONE
A
42V, 2.5A MICROPOWER SYNCHRONOUS
STEP-DOWN REGULATOR
SIZE
5
VOUT
3.3V / 2.5A
VIN
NOTES: UNLESS OTHERWISE SPECIFIED
A
L1
4.7uH
E10
CUSTOMER NOTICE
1. ALL RESISTORS ARE 0402.
ALL CAPACITORS ARE 0402.
9
17
C8
0.1uF
L2
4.7uH
C4
0.22uF
16V
0603
VIN
TR/SS
E7
12
GND
VIN
3.8V - 42V
2
DEMO CIRCUIT 1749A
Tuesday, April 10, 2012
SHEET 1
2
1
OF 1
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