DC548A - Schematic

5
D
4
3
This circuit is proprietary to Linear Technology and supplied
for use with Linear Technology parts.
Customer Notice:Linear Technology has made a best effort to
design a circuit that meets customer-supplied specifications;
however, it remains the customers 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
Applications Engineering for assistance.
-48V RET
TP1
2
1
REVISION HISTORY
LTC CONFIDENTIAL - For Customer Use Only
ECO
REV
DESCRIPTION
DATE
PROTO
2
D
-48VRET
FUSE A
FUSE B
TP5
FUSEA
FUSEB
2
FUSE A
7
OUT B
FUSE B
LTC1921CMS8
-48V
COMBINED
TP6
-48VCOMBINED
OUT A
5
TP14
5
OUT B
6
TP15
8
11
2
3
PWRA_COLL
4
POWER A OK
6
D2
GREEN
7
ISO2
MOC207
9
PWRB_COLL
POWER B OK
PG 1101 WTR
D3
GREEN
ISO3
MOC207
2
OPTO
B
FOR PCB FAB PROCESS
REPRESENTS THE PADS CONNECTED TO EACH NODE
X10
-48VRET
1
X11
-48VA
1
1
1
A
1
PWRA_EMIT
5
1
C
TP10 POWER A
TP11
TP12
STATUS
EMITTER
POWER B
STATUS
COLLECTOR
POWER B
STATUS
EMITTER
B
R3
47K
1/4W
1
1
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCE ON ANGLE - - 2 PLACES - - - 3 PLACES - - INTERPRET DIM AND TOL
PER ASME Y14.5M -1994
1
THIRD ANGLE PROJECTION
X20
PWRB_COLL
X15
-48VCOMBINED
POWER A
STATUS
COLLECTOR
1
X19
X14
FUSEB
FUSE STATUS
EMITTER
X18
PWRA_COLL
X13
FUSEA
PWRB_EMIT
FUSE STATUS
COLLECTOR
X17
FUSE_EMIT
X12
-48VB
R4
5.1K
2W
X16
FUSE_COLL
PWRA_EMIT
10
12
TP9
6
OUT A
4
5
3
VB
C
TP4
OUT F
1
5
8
TP8
6
-48VB
VA
TP13
2
FUSE_EMIT
5
1
1
-48VA
D1
GREEN
LED
SW1
OUT F
ISO1
MOC207
2
-48V B
TP3
U1
1
-48V A
FUSE OK
R2
100K
1%
RTN
R1
100K
1%
TP7
6
1
FUSE_COLL
TP2
APPROVED
02-04-03
APPROVALS
DRAWN MEI
CHECKED
DATE
06-18-02
TECHNOLOGY
TITLE
APPROVED
1
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
SCH, LTC1921CMS8 DUAL -48V SUPPLY
AND FUSE MONITOR
A
ENGINEER
DESIGNER
X21
PWRB_EMIT
CONTRACT NO.
SIZE CAGE CODE
1
DO NOT SCALE DRAWING
4
Tuesday, December 23, 2003
SCALE:NONE
3
DWG NO
REV
2
DC548A
A
FILENAME: 548A-2.DSN
2
SHEET
1
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OF
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