LTC4291

NOT RECOMMENDED FOR NEW DESIGNS

PoE++ PSE Digital Controller

Data Sheet (Rev. 0) Product Selection Table
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    Part Details

    • Four PSE Ports
      • Two Power Channels Per Port
    • Fully Compliant IEEE 802.3bt Type 3 and 4 PSE
      • Compliant Support for Type 1, 2, 3, and 4 PDs
    • Low Power Path Dissipation per Channel
      • 150mΩ Sense Resistance
      • 30mΩ or Lower MOSFET RDS(ON)
    • Chipset Provides Electrical Isolation
      • Eliminates Optos and Isolated 3.3V Supply
    • Very High Reliability Multipoint PD Detection
      • Connection Check Distinguishes Single-Signature and Dual-Signature PDs
    • Continuous, Dedicated Per-Port Power and Current Monitoring
      • Per-Port Power Policing
    • 1MHzI2C Compatible Serial Control Interface
    • Pin or I2C Programmable PD Power Up to 71.3W
    • Available in a 24-Lead 4mm × 4mm QFN Package

    There is a newer version of this part available

    LTC4291-1 PRODUCTION

    4-Port IEEE 802.3bt PoE PSE Controller

    LTC4291
    PoE++ PSE Digital Controller
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    Documentation

    Data Sheet 1

    Reliability Data 1

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    Software Resources

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    Hardware Ecosystem

    Parts Product Life Cycle Description
    LTC4291-1
    		PRODUCTION 4-Port IEEE 802.3bt PoE PSE Controller
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    Latest Discussions

    1 Years Ago
    LTC4291 Port Power deliver
    1 Years Ago
    PoE++ (802.3bt) with LTC4291 and LTC4292, 90W or 71.3W
    1 Years Ago
    Where can I download the source code of LTC4291
    View related discussion on EngineerZone®

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