Overview

Features and Benefits

  • IEEE 802.3cg Compliant SPoE PSE
  • Five Independent PSE Ports
  • Wide Input Voltage Range: 6V to 60V
  • Adjustable Source and Return Electronic Circuit Breakers
  • 50μA (typ) Supply Current in Deep Sleep/Disabled
  • Charge Pump Enhances External High-Side N-Channel MOSFET
  • Supports PD Classification with a Microcontroller
  • SPI Bus Interface with PEC
  • Voltage, Current, and Temperature Telemetry
  • Per Port Power Good Comparators
  • PD Sleep, Wakeup, and Wakeup Forwarding Support
  • Available in 48-lead 7mm × 7mm QFN Package

Product Details

The LTC4296-1 is an IEEE 802.3cg compliant five port Single-pair Power over Ethernet (SPoE) Power Sourcing Equipment (PSE) controller. SPoE simplifies system design and installation with standardized power and Ethernet data over a single-pair cable. The LTC4296-1 is designed for interoperability with 802.3cg Powered Devices (PDs) in 24V or 54V systems. It delivers power using external, low RDS(ON), N-channel MOSFETs which minimize voltage drop and ensure application ruggedness.

High-side circuit breakers with foldback Analog Current Limit (ACL) provide controlled inrush and short circuit protection. An optional low-side circuit breaker protects the negative output against backfeed faults, and ground faults in non-isolated applications. PD classification and Maintain Full Voltage Signature (MFVS) ensure full operating voltage is only applied to the cable when a PD is present. SWn pins disconnect port power snubbers during detection and classification. PD initiated sleep and wakeup are supported. The WAKEUP pin supports wakeup forwarding. Telemetry, status, and software control features are accessed via a SPI bus interface with Packet Error Code (PEC) protection.

The LTC4296-1 provides a versatile SPoE PSE solution for 10BASE-T1L controllers and switches and can easily be integrated with the ADI 10BASE-T1L transceiver portfolio such as the ADIN1100 (PHY), ADIN1110 (MAC-PHY) and ADIN2111 (2-Port switch).

APPLICATIONS

  • Operational Technology (OT) Systems
  • Building and Factory Automation Systems
  • Field instruments and switches
  • Security Systems
  • Traffic Control Systems

Product Lifecycle icon-recommended Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

Evaluation Kits (1)

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.

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Evaluation Boards

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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.