Alternative Parts

  • LTC4222
    LTC4222

    Dual Hot Swap Controller with I2C Compatible Monitoring

  • LTC4281
    LTC4281

    Hot Swap Controller with I2C Compatible Monitoring

Overview

Features and Benefits

  • Allows Safe Board Insertion Into Live Backplane
  • 12-/16-Bit ADC with ±0.7% Total Unadjusted Error
  • Monitors Current, Voltage, Power and Energy
  • Controls Two Parallel N-Channel MOSFETs for High Current Applications
  • Internal EEPROM for Nonvolatile Configuration
  • Wide Operating Voltage Range: 2.9V to 33V
  • I2C/SMBus Digital Interface (Coexists with PMBus Devices)
  • 12V Gate Drive for Lower MOSFET RDS(ON)
  • Programmable Current Limit with 2% Accuracy
  • MOSFET Power Limiting with Current Foldback
  • Continuously Monitors MOSFET Health
  • Stores Minimum and Maximum Measurements
  • Alerts When Alarm Thresholds Exceeded
  • Input Overvoltage/Undervoltage Protection
  • Three General Purpose Input/Outputs
  • Internal ±5% or External Timebases
  • 32-Pin 5mm × 5mm QFN Package

Product Details

The LTC4282 Hot SwapTM controller allows a board to be safely inserted and removed from a live backplane. Using one or more external N-channel pass transistors, board supply voltage and inrush current are ramped up at an adjustable rate. An I2C interface and onboard ADC allows for monitoring of board current, voltage, power, energy and fault status.

The device features analog foldback current limiting and supply monitoring for applications from 2.9V to 33V. Dual 12V gate drive allows high power applications to either share safe operating area across parallel MOSFETs or support a 2-stage start-up that first charges the load capacitance followed by enabling a low on-resistance path to the load.

The LTC4282 is well suited to high power applications because the precise monitoring capability and accurate current limiting reduce the extremes in which both loads and power supplies must safely operate. Non-volatile configuration allows for flexibility in the autonomous generation of alerts and response to faults.

Applications

  • Enterprise Servers and Data Storage Systems
  • Network Routers and Switches
  • Base Stations
  • Platform Management

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

Tools & Simulations

LTspice

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.

LTspice

Models for the following parts are available in LTspice:

LTC4282

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

LTPowerCAD

Design tools for the following parts are available in LTpowerCAD:

ltc4282

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits.

Linduino

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

LTC4282 Didn't find what you were looking for? Ask the Analog community »

Sample & Buy

Sample & Buy functionality exists in desktop site
Back
Check Inventory


The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Price Table Help

 

Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.