DC1848A - Schematic

5
4
3
2
1
REVISION HISTORY
C3
10uF
50V
1210
100uF
50V
15
13
GND
E4
2
SUNCON
50CE100BS
SW
SW
SW
PG
BOOST
EN
OUT
SS
FB
C6
10nF
NC
SYNC
NC
+ C4
VIN
VIN
VIN
GND
10
11
12
VIN
RT
5
6
7
C2
0.47uF
0603
DESCRIPTION
APPROVED
DATE
MOLLY Z.
06-29-12
PRODUCTION
D
VOUT
E1
C11
1uF
16V
0603
1
C7
470pF
4
D1
PDS540
R1
1.00M
1%
C1
47uF
10V
1210
C5
10pF
C8
47uF
10V
1210
E2
VOUT
3.3V / 5A
GND
1
16
R2
576k
1%
14
R5
130K
1%
(400kHz)
9
8
2
3
C
17
R3
2
2
3
U1
LT3976EMSE
E3
REV
_
L1
3.3uH
IHLP2525CZER3R3M01
D
VIN
4.3V - 40V
ECO
E7
3
2
1
SYNC
C
JP2
SYNC
RT FREQ
R6
200K
PG
E6
EN
E5
JP1
ON
B
OFF
1
2
3
L3
3.3uH
XAL5030-332ME
L2
1.0uH
XAL4020-102ME
R7
OPT
0603
VIN
VEMI
R8
OPT
0603
B
C9
10uF
50V
1210
+ C10
33uF
50V
50HVP33
CUSTOMER NOTICE
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.
NOTES: UNLESS OTHERWISE SPECIFIED
A
1. ALL RESISTORS ARE 0402.
ALL CAPACITORS ARE 0402.
APPROVALS
PCB DES.
JW
APP ENG.
MOLLY Z.
TECHNOLOGY
TITLE: SCHEMATIC
5
4
3
A
40V, 5A, 3.3mA 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
IC NO.
N/A
SCALE = NONE
REV.
LT3976EMSE
2
DEMO CIRCUIT 1848A
DATE:
Wednesday, August 08, 2012
2
SHEET 1
1
OF 1
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