LTC4251 LINER [Linear Technology], LTC4251 Datasheet - Page 20

• Manufacturer Part Number: LTC4251
• Description: Negative Voltage Hot Swap Controllers in SOT-23
• Manufacturer: LINER [Linear Technology]

RELATED PARTS
LTC4251/LTC4251-1/
LTC4251-2
PART NUMBER
LT1640AH/LT1640AL
LT1641-1/LT1641-2
LTC1642
LTC1921
LT4250
LTC4252-1/
LTC4252-2
LTC4253
20
TYPICAL APPLICATIO S
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
Negative High Voltage Hot Swap Controllers in SO-8
Positive High Voltage Hot Swap Controllers in SO-8
Fault Protected Hot Swap Controller
Dual – 48V Supply and Fuse Monitor
–48V Hot Swap Controller in SO-8
Negative Voltage Hot Swap Controller in MSOP
Negative Voltage Hot Swap Controller with
3-Output Sequencer
●
FAX: [phone]
V
SUPPLY
(SHORT PIN)
–48V
GND
= –48V
(SHORT PIN)
GND
GND
32.4k
402k
1%
1%
R1
R2
GND
U
34.8k
442k
1%
1%
Figure 17. Power-Limited Circuit Breaker Application
R1
R2
●
SENSE Pin Limiting and Push-Reset at TIMER Pin
Figure 16. –48V/5A Application with Reverse
www.linear.com
PUSH-
RESET
C1
10nF
C1
10nF
S1
4
5
C
220nF
T
UV/OV
TIMER
4
5
LTC4251-1
C
82nF
T
TIMER
UV/OV
V
V
IN
SENSE
LTC4251
3
EE
2
R
10k
500mW
GATE
IN
V
V
SENSE
3
2
EE
IN
R
10k
500mW
GATE
IN
6
1
COMMENTS
Negative High Voltage Supplies from –10V to –80V
Supplies from 9V to 80V, Latched Off/Autoretry
3V to 16.5V, Overvoltage Protection up to 33V
±1V UV and ±1.5V OV Threshold Accuracy, ±200V Transient
Protection, Drives Three Optoisolators for Status
Active Current Limiting, Supplies from –20V to –80V
Fast Active Current Limiting with Drain Accelerated Response,
Supplies from –15V
Fast Active Current Limiting with Drain Accelerated Response,
Supplies from –15V
6
1
C
1µF
IN
C
1µF
IN
R
10Ω
R3
31.6k
D1
BZX84C36
C
C
22nF
22Ω
C
22Ω
R3
R4
100µF
22nF
10Ω
C
R
C
C
C
L
100µF
3
+
4
C
1
2
L
Q1
IRF540
425112 TA03
R
0.01Ω
3
4
+
S
1
LOAD
2
425112 TA04
Q1
IRF540S
V
R
0.02Ω
OUT
S
© LINEAR TECHNOLOGY CORPORATION 2001
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LT 0406 REV A • PRINTED IN USA
425112fa