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Product details

Parameters

FET External Vin (Min) (V) -90 Vin (Max) (V) -10 Vabsmax_cont (V) -100 Current limit (Min) (A) 0.01 Current limit (Max) (A) 500 UL recognition No Overcurrent response Current Limiting Current limit type Adjustable Fault response Auto Retry, Latch Off Current limit function enabled Always Rating Catalog Operating temperature range (C) -40 to 105 open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other eFuses & hot swap controllers

Features

  • Safe Module Insertion and Removal from Live Backplanes
  • In-Rush Current Limiting for Safe Board Insertion into Live Backplanes
  • 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
  • Available in both Latched Fault and Automatic Re-Try Versions
  • Available with either Active HIGH or Active LOW Power Good Flag

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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.

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.

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.

The LM5068 is available in a VSSOP-8 package.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet LM5068 Negative Voltage Hot Swap Controller datasheet (Rev. C) Mar. 21, 2013
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016
Selection guides Hot Swap Selection Tool Jul. 28, 2015
User guides AN-1326 LM5068 Evaluation Board (Rev. A) May 06, 2013

Design & development

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VSSOP (DGK) 8 View options

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