DC2019B - 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
LT8614.
EN/UV
SYNC
E1
R1
100K
E2
+ C1
22uF
63V
R6
OPT
C11
10uF
50V
1206
SUNCON
63CE22BS
C2
1uF
50V
13
C12
1uF
50V
**
14
E6
JP1
E5
SYNC
GND
C
17
1
2
3
2
16
C7
1uF
25V
GND
**
15
R2
18.2K
(2MHz)
E9
TR/SS
E7
C8
0.1uF
L2
0.22uH
VEMI
VEMI
E10
C14
0.1uF
50V
0402
C3
4.7uF
50V
1206
VIN2
BST
3
L1
C4
1.5uH
0.1uF
16V IHLP2020CZER1R5M01
VOUT
8
SW 9
SW 21
SW 22
SW
EN/UV
SYNC
BIAS
RT
PG
FB
C6
47uF
10V
1210
R7
1
VOUT
5V / 4A
R4
20
R5
243k
C5
GND
E4
R3
19
*
C9
4.7uF
C
100k
1Meg
4.7pF
PG
B
VIN
IHLP1616ABERR22M01
C10
10uF
50V
1210
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.
NOTES: UNLESS OTHERWISE SPECIFIED
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
C13
1uF
0
CUSTOMER NOTICE
A
SEE DEMO MANUAL
E3
INTVCC
TR/SS
*
E8
FB1
MPZ2012S300A
B
D
VIN1
GND
GND
4
VIN
18
VIN
5.8V - 42V
6
7 GND1
10 GND1
11 GND2
GND2
D
U1
LT8614EUDC
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
A
42V, 4A MICROPOWER SYNCHRONOUS
STEP-DOWN SILENT SWITCHER
IC NO.
REV.
LT8614EUDC
3
DEMO CIRCUIT 2019B
Thursday, April 23, 2015
2
SHEET
1
1
OF
1
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