LTC4266IGW#PBF

Overview

The LTC4266IGW#PBF is a quad Power Sourcing Equipment (PSE) controller manufactured by Analog Devices Inc. It supports IEEE 802.3at PoE++ standards, enabling power delivery up to 51V to 57V across four independent channels. The device integrates high-side switches and provides comprehensive protection features including overcurrent, thermal, and short-circuit safeguards. Designed for compact form factors, it utilizes a 28-lead SSOP package suitable for surface-mount assembly in network infrastructure applications requiring multi-port PoE solutions.

Feature Summary

• Supports IEEE 802.3at PoE++ standards for high-power data and energy transmission
• Integrates four independent power sourcing equipment channels with individual control
• Includes built-in protection mechanisms against overcurrent, thermal overload, and short circuits

Applications

• Multi-port PoE switch designs
• Network infrastructure power distribution units
• High-density Ethernet access points powering systems

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when ordering. Confirm the package type matches your PCB footprint requirements. Ensure compatibility with your system's voltage range and thermal management strategy before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring multiple PoE ports within a single integrated circuit solution. Consider the thermal dissipation capabilities of the SSOP package relative to your expected load. Verify that your application benefits from the integrated switch architecture rather than discrete implementations.

Part Context

This part belongs to the LTC4266 family of PoE controllers, designed to simplify the implementation of powered devices in networking equipment. It serves as a core component for engineers developing compliant PoE infrastructure that requires reliable power delivery alongside data connectivity.

Replacement Considerations

Consult official Analog Devices documentation for direct pin-compatible alternatives or upgraded versions within the same product line. Verify electrical characteristics match your design requirements before substituting.