LTC4251CS6 Linear Technology Corporation, LTC4251CS6 Datasheet

LTC4251CS6

Manufacturer Part Number

LTC4251CS6

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LTC4251IS6.pdf (20 pages)

2.LTC4251-1IS6.pdf (20 pages)

Specifications of LTC4251CS6

Case

SOT-163

Date_code

2008+

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LTC4251CS6

Manufacturer:

Quantity:

10 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

LTC4251CS6

Manufacturer:

LINEAR/凌特

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LTC4251CS6#TRPBF

Manufacturer:

MICROCHI

Quantity:

200

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FEATURES

■

APPLICATIO S

■

TYPICAL APPLICATIO

Allows Safe Board Insertion and Removal from a

Live –48V Backplane

Floating Topology Permits Very High Voltage

Operation

Programmable Analog Current Limit with Circuit

Breaker Timer

Fast Response Time Limits Peak Fault Current

Programmable Timer

Programmable Undervoltage/Overvoltage Protection

Low Profile (1mm) ThinSOT

Hot Board Insertion

Electronic Circuit Breaker

–48V Distributed Power Systems

Negative Power Supply Control

Central Office Switching

Programmable Current Limiting Circuit

High Availability Servers

Disk Arrays

(SHORT PIN)

–48V

GND

*TWO 0.25W RESISTORS IN SERIES FOR

GND

32.4k

402k

ON THE PCB ARE RECOMMENDED.

–48V, 2.5A Hot Swap Controller

10nF

150nF

TIMER

UV/OV

LTC4251

Package

SENSE

10k

500mW

GATE

18nF

10Ω

1µF

100µF

425112 TA01

IRF530S

Hot Swap Controllers in SOT-23

0.02Ω

OUT

LOAD

DESCRIPTIO

The LTC

Hot Swap

and removed from a live backplane. Output current is

controlled by three stages of current limiting: a timed

circuit breaker, active current limiting and a fast feedforward

path that limits peak current under worst-case catastrophic

fault conditions.

Programmable undervoltage and overvoltage detectors

disconnect the load whenever the input supply exceeds

the desired operating range. The supply input is shunt

regulated, allowing safe operation with very high supply

voltages. A multifunction timer delays initial start-up and

controls the circuit breaker’s response time.

The LTC4251 UV/OV thresholds are designed to match the

standard telecom operating range of – 43V to – 75V. The

LTC4251-1 UV/OV thresholds extend the operating range

to encompass – 36V to – 72V. The LTC4251-2 implements

a UV threshold of – 43V only.

All parts are available in the 6-Pin SOT-23 package.

ThinSOT and Hot Swap are trademarks of Linear Technology Corporation.

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

4251/LTC4251-1/LTC4251-2 negative voltage

controllers allow a board to be safely inserted

2.5A/DIV

20V/DIV

5V/DIV

SENSE

GATE

LTC4251/LTC4251-1/

OUT

Negative Voltage

Start-Up Behavior

1ms/DIV

LTC4251-2

425112 TA02

425112fa

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