MAX6684

PRODUCTION

Fan-Failure Detector with Integrated Power Switch

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Dedicated Fan-Failure Detector
  • Works with Ordinary 2-Wire Fans
  • No Fan Tachometer Output Required
  • No Software Development Required
  • No Analog Circuit Design Required
  • Logic-Level Fan Driver Control
  • Works with Fans Rated Up to 24V/250mA

    • The MAX6684 is an integrated fan-failure detector that detects when a fan exhibits excessive underspeed or a locked rotor. This device is especially well suited for critical systems where no fan control, or simple on/off control is desired. The MAX6684 detects fan failure by evaluating fluctuations in current at the low side of the fan; no tachometer signal is necessary. The output of the device, active-low FAIL, is an active-low, open-drain alarm. The MAX6684 can also be used to switch the fan on or off, based on the state of a logic-level input, active-low OFF. This device can be used with fans rated at up to 24V and 250mA. The MAX6684 is available in an 8-pin SO package, and is specified for operation from -40°C to +85°C.

    Applications

    • Computers: Desktop, Workstation, Server
    • Industrial
    • Network Equipment
    • Notebook Computers
    • Telecommunications
    MAX6684
    Fan-Failure Detector with Integrated Power Switch
    MAX6684: Typical Operating Circuit
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    Documentation

    Data Sheet 1

    Reliability Data 1

    Design Note 1

    Technical Articles 1

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