DC975A - Schematic

1
L1
R1
100K
JP1
A
2
C4
0.1uF
16V
11 Vin
12 SHDN
3
SHDN
RUN
16 MON OUT
E7
C8
0.01uF
*
C7
0.22uF
50V
n/c 1
FB 14
R4
10K
13 CTRL
E3
VIN
GND
C5
0.22uF
50V
R7
APD IN 2
17 GND
CTRL
A
Vout2 4
Vout1 5
10 GND
MON OUT
U1
LT3482EUD
1
*
J1
E4
E5
R8
(OPT)
B
R3
1M
R9 1K
C10
0.1uF
100V
R6
100K
E6
51
C6
0.01uF
100V
R5
15K
2
3
4
5
R2
1M
MON IN 3
E2
50V
6.8uH
SW 8
SW 7
C3
1uF
16V
C1 0.1uF
PUMP 6
VIN
1
GND
E1
15 FSET
9 PGND
VIN
3V-12V
2
APD
80V
2mA
GND
0.1V - 1.25V at CTRL Varies APD Voltage
from 6V - 80V
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.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1
B
CONTRACT NO.
APPROVALS
DRAWN
DATE
HELEN
9/07/06
ENGINEER Jesus.R
9/07/06
CHECKED
TECHNOLOGY
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
TITLE
LT3482EUD, DC/DC Boost Converter for APD Bias
APPROVED
DESIGNER
Thursday, February 01, 2007
SIZE
CAGE CODE
SCALE:
DWG NO
FILENAME:
SHEET
2
REV
A
DC975A
1
OF
1
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