DC2373A - Schematic

5
4
3
2
1
SHOULD BE PLACED BETWEEN VIN1 AND GND1. C12
** C2
SHOULD BE PLACED BETWEEN VIN2 AND GND2. THESE
CAPACITORS MUST BE PLACED AS CLOSE AS POSSIBLE TO
LT8641.
GND
EN/UV
E1
OPT
4
VIN
R1
1M
E2
+ C1
C11
4.7uF
100V
1206
22uF
100V
R6
OPT
**
C2
0.1uF
100V
13
**
C12
0.1uF
100V
SUNCON
100CE22BS
14
E6
17
VCC
2
JP1
E5
VCC
1
2
3
4
5
6
7
8
16
C7
1uF
25V
SYNC
SPREAD SPECTRUM
15
R2
18.2K
(2MHz)
PULSE SKIPPING
BURST
TR/SS
E7
GND
C8
0.1uF
E9
FB1
MPZ2012S300A
B
VEMI
5.5V - 65V
C14
0.1uF
100V
0603
BST
3
L1
C4
2.2uH
0.1uF
16V IHLP2525CZER2R2M01
8
SW 9
SW 21
SW 22
SW
EN/UV
SYNC
BIAS
RT
PG
FB
C6
100uF
10V
1210
R7
1
C9
1uF
E4
R4
20
R5
191k
C5
*
GND
C
100k
R3
19
VOUT
5V / 3.5A
1M
10pF
PG
E8
B
VIN
C3
4.7uF
100V
1210
C10
4.7uF
100V
1210
NOTES: UNLESS OTHERWISE SPECIFIED
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
TECHNOLOGY
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
TITLE: SCHEMATIC
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1. ALL RESISTORS ARE 0603.
ALL CAPACITORS ARE 0603.
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
E3
C13
10uF
0805
10V
0
CUSTOMER NOTICE
A
SEE DEMO MANUAL
VOUT
INTVCC
TR/SS
*
L2
0.22uH
IHLP1212BZERR22M11
VEMI
E10
VIN2
6
7 GND1
10 GND1
11 GND2
GND2
SYNC
C
D
VIN1
GND
VIN
5.5V - 65V
18
D
U1
LT8641EUDC
4
3
N/A
DATE:
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
65V, 3.5A MICROPOWER SYNCHRONOUS
STEP-DOWN SILENT SWITCHER
IC NO.
REV.
LT8641EUDC
1
DEMO CIRCUIT 2373A
Wednesday, February 17, 2016
2
SHEET
1
1
OF
1
A
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