Datasheet > LTC4251-2

LTC4251-2

更新时间： 2024-11-21 00:04:27

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
20页	240K
描述
Negative voltage Hot Swap controllers in SOT-23

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中文翻译

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LTC4251-2 数据手册

LTC4251/LTC4251-1/

LTC4251-2

Negative Voltage

Hot Swap Controllers in SOT-23

DESCRIPTIO

FEATURES

The LTC^®4251/LTC4251-1/LTC4251-2 negative voltage

Hot Swap^TMcontrollers allow a board to be safely inserted

and removed from a live backplane. Output current is

controlled by three stages of current limiting: a timed

circuitbreaker,activecurrentlimitingandafastfeedforward

paththatlimitspeakcurrentunderworst-casecatastrophic

fault conditions.

■

Allows Safe Board Insertion and Removal from a

Live –48V Backplane

■

Floating Topology Permits Very High Voltage

Operation

Low Profile (1mm) ThinSOT^TMPackage

■

Programmable Analog Current Limit with Circuit

Breaker Timer

■

Fast Response Time Limits Peak Fault Current

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.

■

Programmable Timer

■

Programmable Undervoltage/Overvoltage Protection

APPLICATIO S

■

Hot Board Insertion

TheLTC4251UV/OVthresholdsaredesignedtomatchthe

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

LTC4251-1 UV/OV thresholds extend the operating range

toencompass–36Vto –72V. TheLTC4251-2implements

a UV threshold of –43V only.

■

Electronic Circuit Breaker

■

–48V Distributed Power Systems

■

Negative Power Supply Control

■

Central Office Switching

■

Programmable Current Limiting Circuit

■

High Availability Servers

Disk Arrays

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

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

ThinSOT and Hot Swap are trademarks of Linear Technology Corportation.

■

TYPICAL APPLICATIO

–48V, 2.5A Hot Swap Controller

Start-Up Behavior

GND

10k

GATE

5V/DIV

LOAD

(SHORT PIN)

500mW

100µF

402k

OUT

1µF

IRF530S

SENSE

2.5A/DIV

UV/OV GATE

LTC4251

10nF

TIMER SENSE

32.4k

10Ω

OUT

0.02Ω

20V/DIV

150nF

18nF

425112 TA01

–48V

425112 TA02

*TWO 0.25W RESISTORS IN SERIES FOR

ON THE PCB ARE RECOMMENDED.

1ms/DIV

425112f

12 3 4 5 6 7...20

中文翻译

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与LTC4251-2相关器件

型号	品牌	获取价格	描述	数据表
LTC4251-2_15	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-2CS6	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-2CS6#PBF	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-2CS6#TR	Linear	获取价格	暂无描述
LTC4251-2CS6#TRM	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-2CS6#TRPBF	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-2IS6	Linear	获取价格	Negative Voltage Hot Swap Controllers in SOT-23
LTC4251-2IS6#PBF	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-2IS6#TR	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat
LTC4251-2IS6#TRM	Linear	获取价格	LTC4251 - Negative Voltage Hot Swap Controllers in SOT-23; Package: SOT; Pins: 6; Temperat

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