Datasheet

LTC1921
12
1921f
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2002
LT/TP 0902 2K • PRINTED IN USA
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT4250 –48V Hot Swap Controller in SO-8 Package Active Current Limiting, Supplies from –20V to –80V
LTC4251 –48V Hot Swap Controller in SOT-23 Package Fast Active Current Limiting, Supplies from –15V (Floating)
LTC4252 –48V Hot Swap Controller in MSOP Package Fast Active Current Limiting, Floating Supply, PWRGD Output
LTC4253 –48V Hot Swap Controller with Sequencer Similar to LTC4252, Sequences Three DC/DC Converters
Voltage and Fuse Monitor with LED Outputs
Single 48V Supply Monitor Single –48V Supply Monitor
TYPICAL APPLICATIO S
U
MOC207
1921 TA04
LOGIC V
+
LOGIC
COMMON
SUPPLY GOOD
47k
OUT FV
A
3
4
5
7
47k
1/4W
2
8
1
6
V
B
FUSE A
RTN
V
+
LTC1921
FUSE B
OUT A
OUT B
MOC207
1921 TA06
LOGIC V
+
LOGIC
COMMON
SUPPLY GOOD
47k
OUT FV
A
V
–
3
4
5
7
47k
1/4W
2
8
1
6
V
B
FUSE A
RTN
LTC1921
FUSE B
OUT A
OUT B
1921 TA03
R3
5.1k
2W
D5
GREEN
D4
GREEN
D3
GREEN
OUT F
–48V RETURN
V
A
3
4
57
2
8
1
6
–48V OUT
V
B
FUSE A
RTN
LTC1921
FUSE B
OUT A
OUT B
D1
F1
SUPPLY A
–48V
SUPPLY B
–48V
F2
D2
R2
100k
R1
100k