LTC4252-1A

更新时间： 2024-09-17 11:45:11

品牌	Logo	应用领域
凌特 - Linear		二极管控制器
页数	文件大小	规格书
14页	185K
描述
Negative Voltage Diode-OR Controller

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中文翻译

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LTC4252-1A 数据手册

LTC4354

Negative Voltage

Diode-OR Controller

and Monitor

FeaTures

DescripTion

The LTC^®4354 is a negative voltage diode-OR controller

that drives two external N-channel MOSFETs. It replaces

two Schottky diodes and the associated heat sink, saving

power and area. The power dissipation is greatly reduced

by using N-channel MOSFETs as the pass transistors.

Power sources can easily be ORed together to increase

total system power and reliability.

Controls N-Channel MOSFETs

Replaces Power Schottky Diodes

Less Than 1µs Turn-off Time Limits Peak

Fault Current

80V Operation

Smooth Switchover without Oscillation

No Reverse DC Current

Fault Output

When first powered up, the MOSFET body diode conducts

the load current until the pass transistor is turned on.

The LTC4354 servos the voltage drop across the pass

transistors to ensure smooth transfer of current from one

transistor to the other without oscillation.

Selectable Fault Thresholds

Available in 8-Lead (3mm × 2mm) DFN and

8-Lead SO Packages

applicaTions

The MOSFETs are turned off in less than 1µs whenever

the corresponding power source fails or is shorted. Fast

turn-off prevents the reverse current from reaching a level

that could damage the pass transistors.

AdvancedTCASystems

–48V Distributed Power Systems

Computer Systems/Servers

Telecom Infrastructure

Optical Networks

A fault detection circuit with an open-drain output capable

ofdrivinganLEDoropto-couplerindicateseitherMOSFET

short, MOSFET open or supply failed.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

Hot Swap, PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

Typical applicaTion

–48V Diode-OR

Power Dissipation vs Load Current

–48V_RTN

12k

33k

DIODE (MBR10100)

POWER

SAVED

LOAD

LTC4354

FAULT

DA DB

LED

1µF

FET (IRF3710)

= –48V

4354 TA01

IRF3710

CURRENT (A)

IRF3710

4354 TA01b

4354fc

12 3 4 5 6 7...14

中文翻译

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与LTC4252-1A相关器件

型号	品牌	获取价格	描述	数据表
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
LTC4252-1CMS8#TR	Linear	获取价格	LTC4252/LTC4252A - Negative Voltage Hot Swap Controllers; Package: MSOP; Pins: 8; Temperat
LTC4252-1CMS8#TRPBF	Linear	获取价格	暂无描述
LTC4252-1CMS8PBF	Linear	获取价格	Negative Voltage Hot Swap Controllers

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