Hot Swap Controller, 2.9V to 15V supply, 250 mV output, QFN-24

LTC4280CUFD#PBF - Hot Swap Controller, 2.9V to 15V supply, 250 mV output, QFN-24

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Product Overview

The LTC4280CUFD#PBF is a Hot Swap Controller allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, board supply voltage and inrush current are ramped up at an adjustable rate. An I²C interface and on board ADC allow for monitoring of load current, voltage and fault status. The device features adjustable analog foldback current limit and a FILTER pin which configures the time spent in overcurrent before declaring a fault. An I²C interface may configure the part to latch off or automatically restart after the LTC4280 detects a current limit fault. The controller has additional features to interrupt the host when a fault has occurred, notify when output power is good, detect insertion of a load card and power-up either automatically upon insertion or wait for an I²C command to turn on.
  • 8-bit ADC monitors current and voltage
  • Adjustable overcurrent filter time
  • High side drive for external N-channel MOSFET
  • No external gate capacitor required
  • Input overvoltage/undervoltage protection
  • Optional latch off or auto-retry after faults
  • Alerts host after faults
  • Inrush current limit with foldback


Communications & Networking, Computers & Computer Peripherals

Product Information

Computers, Electronic Circuit Breakers, Live Board Insertion, Platform Management, Servers
MSL 1 - Unlimited
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