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LT1640LIN8#PBF

Description
IC CONTRLR HOTSWAP NEGVOLT 8-DIP
CategoryPower/power management    The power supply circuit   
File Size186KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LT1640LIN8#PBF Overview

IC CONTRLR HOTSWAP NEGVOLT 8-DIP

LT1640LIN8#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Manufacturer packaging codeN
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDIP-T8
JESD-609 codee3
Humidity sensitivity level1
Nominal Negative Supply Voltage (Vsup)-48 V
Number of channels1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply-48 V
Certification statusNot Qualified
Maximum seat height3.937 mm
Maximum supply current (Isup)5 mA
Maximum supply voltage (Vsup)80 V
Minimum supply voltage (Vsup)10 V
Nominal supply voltage (Vsup)48 V
surface mountNO
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
Base Number Matches1
LT1640L/LT1640H
Negative Voltage
Hot Swap Controller
FEATURES
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
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
®
1640L/LT1640H is an 8-pin, negative voltage Hot
Swap
TM
controller that allows a board to be safely inserted
and removed from a live backplane. Inrush current 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
(LT1640L) or PWRGD (LT1640H) signal can be used to
directly enable a power module. The LT1640L is designed
for modules with a low enable input and the LT1640H for
modules with a high enable input.
The LT1640L/LT1640H is 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%
R5
9.09k
1%
UV = 37V
R6
10k
1%
8
V
DD
3
UV
LT1640L
2
OV
V
EE
4
SENSE
5
GATE
6
(SHORT PIN)
PWRGD
1
INRUSH
CURRENT
1A/DIV
DRAIN
7
1N4148
OV = 71V
*
GATE – V
EE
10V/DIV
3
– 48V
1
R1
0.02Ω
5%
2
C1
150nF
25V
4
R2
10Ω
5%
R3
18k C2
3.3nF
5%
100V
2
ON/OFF
9
V
OUT+
8
SENSE
+
7
TRIM
6
SENSE
4
5
V
OUT–
V
IN–
1
V
IN+
LUCENT
JW050A1-E
5V
DRAIN
50V/DIV
V
EE
50V/DIV
Q1
IRF530
* 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
CONTACT
BOUNCE
5ms/DIV
1640 F06b
1640 TA01
U
Input Inrush Current
1640lhfb
U
U
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