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LT1641-1IS8 Datasheet(PDF) 1 Page - Linear Technology

Part # LT1641-1IS8
Description  Positive High Voltage Hot Swap Controllers
Download  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1641-1IS8 Datasheet(HTML) 1 Page - Linear Technology

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1
LT1641-1/LT1641-2
164112fc
Positive High Voltage
Hot Swap Controllers
The LT
®1641-1/LT1641-2 are 8-pin Hot SwapTM control-
lers that allow a board to be safely inserted and removed
from a live backplane. Using an external N-channel pass
transistor, the board supply voltage can be ramped up at
a programmable rate. A high side switch driver controls an
N-channel gate for supply voltages ranging from 9V to
80V.
The chips feature a programmable analog foldback cur-
rent limit circuit. If the chips remain in current limit for
more than a programmable time, the N-channel pass
transistor is either latched off (LT1641-1) or is set to
automatically restart after a time-out delay (LT1641-2).
The PWRGD output indicates when the output voltage,
sensed by the FB pin, is within tolerance. The ON pin
provides programmable undervoltage lockout.
The LT1641-1/LT1641-2 are available in the 8-lead SO
package.
Hot Board Insertion
Electronic Circuit Breaker
Industrial High Side Switch/Circuit Breaker
24V/48V Industrial/Alarm Systems
Allows Safe Board Insertion and Removal from a
Live Backplane
Controls Supply Voltage from 9V to 80V
Programmable Analog Foldback Current Limiting
High Side Drive for an External N-Channel
Latched Operation Mode (LT1641-1)
Automatic Retry (LT1641-2)
User Programmable Supply Voltage Power-Up Rate
Undervoltage Lockout
Overvoltage Protection
Both are available in 8-Lead SO Package
*SMAT70A
*DIODES, INC.
VIN
24V
SHORT
PIN
GND
VCC
TIMER
SENSE
GATE
D1
CMPZ
5248B
GND
PWRGD
PWRGD
FB
R5
10
5%
ON
R1
49.9k
1%
1641-1 TA01
R2
3.4k
1%
C2
0.68
µF
R6,
1k, 5%
RS
0.01
C1
10nF
R3
59k
1%
R4
3.57k
1%
R7
24k
5%
CL
VOUT
LT1641-1/LT1641-2
Q1
IRF530
24V Input Voltage Application
APPLICATIO S
FEATURES
TYPICAL APPLICATIO
DESCRIPTIO
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.


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