LTC4266CIUHF#PBF

Overview

The LTC4266CIUHF#PBF is a quad Power Sourcing Equipment (PSE) controller designed for IEEE 802.3at PoE applications. It integrates four independent channels to manage power delivery over Ethernet cabling. The device supports classification and detection protocols compliant with industry standards, enabling efficient power management for connected Powered Devices.

Feature Summary

• Integrates four independent PSE channels for multi-port power sourcing
• Supports IEEE 802.3at PoE+ classification and detection protocols
• Includes integrated high-side switches for channel control

Applications

• Multi-port PoE+ network switches
• Power sourcing equipment in enterprise networking infrastructure
• PoE midspan injectors requiring quad-channel capability

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when ordering. Confirm the package type matches your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the datasheet for pinout compatibility with existing designs.

Selection Notes

Select this component for designs requiring four isolated PoE ports controlled by a single IC. Consider thermal management solutions due to the integration of multiple high-side switches. Evaluate system-level power budgeting against the controller's classification capabilities. Verify compatibility with upstream DC-DC converters for input voltage regulation.

Part Context

This part belongs to the LTC4266 family of quad PSE controllers from Analog Devices. It serves as a core component for implementing PoE+ compliant power distribution in network hardware. The device simplifies design by integrating control logic and switching elements into a compact QFN package.

Replacement Considerations

Check for direct replacements within the LTC4266 series such as the LTC4266IUHF#PBF. Verify functional equivalence regarding pinout and electrical characteristics before substitution.