DC1419A - Schematic

5
4
3
2
1
D
D
GND
R1
1.0
5%
3
C2
4.7uF
50V
1206
R3
10k
RUN
JP1
E2
D3 OPT
1
2
1
2
FlipKY-IR05H40CSPTR
3
FlipKY-IR05H40CSPTR
L1
4.7uH
U1
LT3663EDCB
1
Vin
2
RUN
SW
8
BOOST
7
ISENSE
6
VOUT
5
1
7.5V - 36V
C1
4.7uF
50V
1206
E1
C
D2 OPT
NOTE: 60V MAX TRANSIENT VOLTAGE
C3
0.1uF
16V
2
HVIN
1
1
R5
71.5k
JP3
R4
FB
ILIM
3
JP2
0
9
4
0
GND
SHDN
R2
75k
147k
C
VLCF5020T-4R7N1R7-1
D1
DFLS240
40V
2.0A
C4
47uF
1206
10V
20%
E3
R9
20
5%
TP1
HVBUCK
3.3V / 5.0V
1.2A
TP2
GND
R6
255k
B
E4
B
JP4
3.3V
5.0V
R7
80.6k
0.6A
0.8A
1.0A
1.2A
JP2
0
0
1
1
JP3
0
1
0
1
R8
115k
Current Limit Settings
Unless noted:
Resistors: Ohms
0402
1%
1/16W
Capacitors:
0402
10%
25V
A
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
CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CONTRACT NO.
APPROVALS
DRAWN:
J. Drew
CHECKED:
4
3
TITLE:
SCHEMATIC
SIZE
DWG NO.
APPROVED:
ENGINEER:
J. Drew
DESIGNER:
A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
TECHNOLOGY
DATE:
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
LT3663EDCB
1.2A, 1.5MHz Step-Down Switching Regulator
with Output Current Limit
DC1419A
Monday, June 30, 2008
REV
A
SHEET
1
1
OF 1
A
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