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LT1640ALIS8#PBF

Description
Hot Swap Controller 1-CH -10V N-Channel Negative High Voltage 8-Pin SOIC N Tube
CategoryPower/power management    The power supply circuit   
File Size215KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LT1640ALIS8#PBF Overview

Hot Swap Controller 1-CH -10V N-Channel Negative High Voltage 8-Pin SOIC N Tube

LT1640ALIS8#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeNegative High Voltage
Fault ManagementAuto-Restart
External FETN-Channel
Number of Channels1
PGOOD Output LogicActive Low
Minimum Operating Supply Voltage (V)-80
Maximum Operating Supply Voltage (V)-10
Typical Circuit Breaker Threshold Voltage (mV)50
Maximum Supply Current (mA)5
External Sense ResistorYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
PackagingTube
Pin Count8
Standard Package NameSOP
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LT1640AL/LT1640AH
Negative Voltage
Hot Swap Controller
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
Allows Safe Board Insertion and Removal
from a Live – 48V Backplane
Operates from –10V to – 80V
Programmable Inrush Current
Allows 50mA of Reverse Drain Pin Current
Programmable Electronic Circuit Breaker
Programmable Overvoltage Protection
Programmable Undervoltage Lockout
Power Good Control Output
APPLICATIO S
s
s
s
Central Office Switching
– 48V Distributed Power Systems
Negative Power Supply Control
The LT
®
1640AL/LT1640AH are 8-pin, negative voltage
Hot Swap
TM
controllers that allow a board to be safely
inserted and removed from a live backplane. Inrush cur-
rent is limited to a programmable value by controlling the
gate voltage of an external N-channel pass transistor. The
pass transistor is turned off if the input voltage is less than
the programmable undervoltage threshold or greater than
the overvoltage threshold. A programmable electronic
circuit breaker protects the system against shorts. The
PWRGD (LT1640AL) or PWRGD (LT1640AH) signal can
be used to directly enable a power module. The LT1640AL
is designed for modules with a low enable input and the
LT1640AH for modules with a high enable input.
The LT1640AL/LT1640AH are available in 8-pin PDIP and
SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
GND
GND
R4
562k
1%
UV = 37V
R5
9.09k
1%
R6
10k
1%
*
(SHORT PIN)
8
V
DD
3
UV
LT1640AL
2
OV
V
EE
4
SENSE
5
C1
150nF
25V
4
2
Q1
IRF530
GATE
6
R2
10Ω
5%
R3
18k C2
3.3nF
5%
100V
2
ON/OFF
1
9
V
OUT+
V
IN+
8
SENSE
+
7
TRIM
6
SENSE
4
5
V
OUT–
V
IN
LUCENT
JW050A1-E
5V
DRAIN
7
PWRGD
1
CONTACT
BOUNCE
OV = 71V
3
– 48V
1
R1
0.02Ω
5%
* DIODES INC. SMAT70A
THESE COMPONENTS ARE APPLICATION
SPECIFIC AND MUST BE SELECTED BASED
UPON OPERATING CONDITIONS AND DESIRED
PERFORMANCE. SEE APPLICATIONS
INFORMATION.
C3
0.1µF
100V
+
C4
100µF
100V
+
C5
100µF
16V
1640A TA01
U
Input Inrush Current
1640A F07b
U
U
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