Datasheet > LM5068MM-1/MMX-1

LM5068MM-1/MMX-1

更新时间： 2022-04-02 15:23:00

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
33页	1750K
描述
Negative Voltage Hot Swap Controller

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LM5068MM-1/MMX-1 数据手册

LM5068

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SNVS254C –JANUARY 2004–REVISED MARCH 2013

LM5068 Negative Voltage Hot Swap Controller

Check for Samples: LM5068

FEATURES

DESCRIPTION

The LM5068 hot-swap controller provides intelligent

control of power supply connections during the

insertion and removal of circuit cards powered by live

system backplanes.

•

Safe Module Insertion and Removal from Live

Backplanes

In-Rush Current Limiting for Safe Board

Insertion into Live Backplanes

The LM5068 provides both in-rush current control and

short-circuit protection functions, and limits power

supply transients in the backplane caused by the

insertion of additional circuit cards. The LM5068

controls the external N-Channel MOSFET to provide

programmable load current limiting and circuit

breaker functions using a single external current

sense resistor. The LM5068 issues a power good

(PWRGD) signal at the conclusion of a successful

power-on sequence. Input over-voltage or under -

voltage fault conditions will cancel the PWRGD

indication.

Fast Response to Over-Current Fault

Conditions with Active Current Limiting

•

-10V to -90V Input Range

Programmable Under-Voltage/Over-Voltage

Shutdown Protection with Adjustable

Hysteresis

•

Programmable Multi-Function Timer for Board

Insertion De-Bounce Delay

Fault Timer Avoids Nuisance Trips Caused by

Short Duration Load Transients

Active Gate Clamping During Initial Power

Application

The LM5068-1 and -2 indicate power-good as an

open-drain active HIGH PWRGD state. The LM5068-

3 and -4 indicate power-good as an open-drain active

LOW PWRGD state. The LM5068-1 and -3 latch off

after a fault condition is detected while the LM5068-2

and -4 continuously re-try at intervals set by a

programmable timer.

Available in both Latched Fault and Automatic

Re-Try Versions

Available with either Active HIGH or Active

LOW Power Good Flag

The LM5068 is available in a VSSOP-8 package.

APPLICATIONS

•

- 48V Power Modules

Central Office Switching

Distributed Power Systems

Electronic Circuit Breaker

PBX Systems

Negative Power Supply Control

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...33

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与LM5068MM-1/MMX-1相关器件

型号	品牌	描述	获取价格	数据表
LM5068MM-1/NOPB	NSC	IC 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, MSOP-8, Power Management Circuit	获取价格
LM5068MM-1/NOPB	TI	Negative Voltage Hot Swap Controller	获取价格
LM5068MM-2	TI	LM5068 Negative Voltage Hot Swap Controller	获取价格
LM5068MM-2/MMX-2	TI	Negative Voltage Hot Swap Controller	获取价格
LM5068MM-2/NOPB	TI	-10V 至 -80V 热插拔控制器 \| DGK \| 8 \| -40 to 105	获取价格
LM5068MM-3	TI	Negative Voltage Hot Swap Controller	获取价格

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