LT1640H Linear Technology Corporation, LT1640H Datasheet

LT1640H

Manufacturer Part Number

LT1640H

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1640H.pdf (12 pages)

2.LT1640H.pdf (12 pages)

3.LT1640H.pdf (16 pages)

Specifications of LT1640H

Case

SOP8

Date_code

0649+

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Current page: 1 of 16
Download datasheet (188Kb)

FEATURES

APPLICATIO S

UV = 37V

OV = 71V

– 48V

* DIODES INC. SMAT70A

†

SPECIFIC AND MUST BE SELECTED BASED

UPON OPERATING CONDITIONS AND DESIRED

PERFORMANCE. SEE APPLICATIONS

INFORMATION.

TYPICAL APPLICATIO

GND

THESE COMPONENTS ARE APPLICATION

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

Central Office Switching

– 48V Distributed Power Systems

Negative Power Supply Control

GND

9.09k

562k

10k

(SHORT PIN)

†

0.02

†

SENSE

0.1 F

100V

150nF

25V

LT1640L

GATE

†

IRF530

100 F

100V

18k

†

1N4148

3.3nF

100V

PWRGD

†

DRAIN

JW050A1-E

–

LUCENT

ON/OFF

SENSE

TRIM

OUT

–

1640 TA01

100 F

16V

DESCRIPTIO

The LT

Swap

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.

Hot Swap is a trademark of Linear Technology Corporation.

, LTC and LT are registered trademarks of Linear Technology Corporation.

GATE – V

CURRENT

controller that allows a board to be safely inserted

INRUSH

1640L/LT1640H is an 8-pin, negative voltage Hot

10V/DIV

50V/DIV

1A/DIV

DRAIN

Hot Swap Controller

CONTACT

BOUNCE

Negative Voltage

LT1640L/LT1640H

Input Inrush Current

5ms/DIV

1640lhfb

1640 F06b

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