LTC4252-1

更新时间： 2024-11-06 22:35:35

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
32页	328K
描述
Negative Voltage Hot Swap Controllers

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中文翻译

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数据手册

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LTC4252-1 数据手册

LTC4252-1/LTC4252-2

Negative Voltage

Hot Swap Controllers

FEATURES

DESCRIPTIO

■

Allows Safe Board Insertion and Removal from a

The LTC^®4252 negative voltage Hot Swap^TMcontroller

allows a board to be safely inserted and removed from a

livebackplane.Outputcurrentiscontrolledbythreestages

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.

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 undervoltage and overvoltage detectors

disconnect the load whenever the input supply exceeds

the desired operating range. The LTC4252’s 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

circuit breaker’s response time is accelerated by sensing

excessive MOSFET drain voltage, keeping the MOSFET

within its safe operating area (SOA). A programmable

soft-start circuit controls MOSFET inrush current at start-

up. A power good status output can enable a power

module at start-up or disable it if the circuit breaker trips.

■

Programmable Soft-Start Current Limit

■

Programmable Timer with Drain Voltage

Accelerated Response

■

Programmable Undervoltage/Overvoltage Protection

■

LTC4252-1: Latch Off After Fault

LTC4252-2: Automatic Retry After Fault

■

APPLICATIO S

■

Hot Board Insertion

■

Electronic Circuit Breaker

■

–48V Distributed Power Systems

■

The LTC4252-1 latches off after a circuit breaker fault times

out. The LTC4252-2 provides automatic retry after a fault.

TheLTC4252isavailableineitheran8-pinor10-pinMSOP.

Negative Power Supply Control

Central Office Switching

Programmable Current Limiting Circuit

High Availability Servers

Disk Arrays

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

Hot Swap is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

–48V/2.5A Hot Swap Controller

Start-Up Behavior

GND

3× 1.8k IN SERIES

1/4W EACH

100µF

LOAD

GATE

5V/DIV

1µF

GND

5.1k

(SHORT PIN)

402k

LTC4252-1

PWRGD

SENSE

2.5A/DIV

OUT

DRAIN

GATE

32.4k

IRF530S

TIMER

OUT

20V/DIV

SENSE

0.33µF

10Ω

0.02Ω

10nF

68nF

18nF

PWRGD

10V/DIV

4252-1/2 TA01

–48V

* M0C207

1ms/DIV

4252-1/2 TA01a

425212f

12 3 4 5 6 7...32

中文翻译

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与LTC4252-1相关器件

型号	品牌	获取价格	描述	数据表
LTC4252-1_12	Linear	获取价格	Negative Voltage Hot Swap Controllers
LTC4252-1_15	Linear	获取价格	Negative Voltage Hot Swap Controllers
LTC4252-1A	Linear	获取价格	Negative Voltage Diode-OR Controller
LTC4252-1CMS	Linear	获取价格	Negative Voltage Hot Swap Controllers
LTC4252-1CMS#PBF	Linear	获取价格	LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 10; Tempera
LTC4252-1CMS#TR	Linear	获取价格	LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 10; Tempera
LTC4252-1CMS#TR	ADI	获取价格	Power Supply Support Circuit, Adjustable, 2 Channel, CMOS, PDSO10
LTC4252-1CMS#TRPBF	Linear	获取价格	LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 10; Tempera
LTC4252-1CMS8	Linear	获取价格	Negative Voltage Hot Swap Controllers
LTC4252-1CMS8#PBF	Linear	获取价格	LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 8; Temperat

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