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MAX5920 - -48V Hot-Swap Controller

General Description

The MAX5920A/MAX5920B are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane.

The MAX5920A/MAX5920B operate from -20V to -80V and are well-suited for -48V power systems.

Key Features

  • o Allows Safe Board Insertion and Removal from a Live -48V Backplane o Pin- and Function-Compatible with LT4250L (MAX5920A) o Pin-Compatible with LT1640L (MAX5920A) o Pin- and Function-Compatible with LT4250H (MAX5920B) o Pin-Compatible with LT1640H (MAX5920B) o Circuit-Breaker Immunity to Input Voltage Steps and Current Spikes o Withstands -100V Input Transients with No External Components o Programmable Inrush and Short-Circuit Current Limits o Operates from -20V to -80V o Programmable Overvol.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2931; Rev 0; 8/03 -48V Hot-Swap Controller with External RSENSE General Description The MAX5920A/MAX5920B are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane. The MAX5920A/MAX5920B operate from -20V to -80V and are well-suited for -48V power systems. These devices are pin and function compatible with the LT4250 and pin compatible with the LT1640. The MAX5920A/MAX5920B provide a controlled turn-on to circuit cards preventing glitches on the power-supply rail and damage to board connectors and components. The MAX5920A/MAX5920B provide undervoltage, overvoltage, and overcurrent protection. These devices ensure the input voltage is stable and within tolerance before applying power to the load.