DC1154A - Schematic

5
4
3
2
1
C1
100pF
R1
21.5K
Vin
+
4
E1
-VIN
R3
221K
R4
221K
3
CIN2
2.2uF
100V
1
D2
PDZ6.8B
6.8V
1
R6
51
2
COUT1
100uF
6.3V
D1
UPS840
10
9
1
5
D3
BAS516
+Vout
7
8
D4
OPT
2
3
4
VFB
GND
R12
0.068
7
VIN
6
NGATE
5
R8
220
R13
OPT
R17
OPT
C12
0.1uF
COMP
5
OC
0.6V FB
4
C6
OPT
C5
OPT
U2
LT4430ES6
C8
OPT
OPT
C7
OPT
R14
OPT
R15
OPT
R19
0
CUSTOMER NOTICE
NOTES:
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.
INSTALL 2200pF/250VAC CAPACITOR IN PLACE OF
RESISTOR R19 IN ISOLATED APPLICATIONS
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
GND
3
C4
OPT
U3
OPT
D6
OPT
3
JP1
2
R11
OPT
B
2
OFF
6
D5
OPT
C10
4.7uF
1
ON
OPTO
1
RUN
VIN
1
R16
12.1K
R18
15K
1
2
C11
47pF
LTC3873ETS8
ITH
RUN/SS
R10
0
8
4
B
SW
3
C9
2.2nF
IPRG
C
C3
OPT
2
1
4
R9
0
A
C2
150pF
200V
3
U1
[email protected]
3
Q2
FDC2512
E2
2
R5
OPT
1
2
5
6
R7
OPT
+VOUT
COUT3
100uF
6.3V
-VOUT
Q1
MMBTA42
C
COUT2
100uF
6.3V
E3
2
E4
2
_
CIN1
2.2uF
100V
1
36V-72V
D
+VOUT
1
+VIN
R2
0
T1
PA1861_RevS01A
2
D
4
3
CONTRACT NO.
APPROVALS
DATE
DRAWN Antonina Karpova 10/04/06
CHECKED
TECHNOLOGY
TITLE
APPROVED
ENGINEER Victor Khasiev
10/04/06
DESIGNER
Monday, February 26, 2007
SIZE
A
LTC3873ETS8
TELECOM DC/DC CONVERTER
CAGE CODE
SCALE:
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
FILENAME:
DWG NO
REV
DC1154A
SHEET
1
2
1
OF
1
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