LTC4280
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4280

Hot Swap Controller with I2C Compatible Monitoring

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $4.72
Features
  • Allows Safe Insertion into Live Backplane
  • 8-Bit ADC Monitors Current and Voltage
  • I2C/SMBus Interface
  • Wide Operating Voltage Range: 2.9V to 15V
  • Adjustable Overcurrent Filter Time
  • High Side Drive for External N-Channel MOSFET
  • No External Gate Capacitor Required
  • Input Overvoltage/Undervoltage Protection
  • Optional Latchoff or Auto-Retry After Faults
  • Alerts Host After Faults
  • Inrush Current Limit with Foldback
  • Available in 24-Pin 4mm × 5mm QFN Package
Additional Details
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The LTC4280 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 onboard 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.

Applications

  • Live Board Insertion
  • Electronic Circuit Breakers
  • Computers, Servers
  • Platform Management
Part Models 4
1ku List Price Starting From $4.72

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4280CUFD#PBF
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LTC4280CUFD#TRPBF
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LTC4280IUFD#PBF
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LTC4280IUFD#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1704A

LTC4280 | Hot Swap Controller with ADC and I2C, 3 GPIOs (Requires DC590)

Tools & Simulations

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

Purchase Linduino

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