LTC4274CUHF#TRPBF

Overview

The LTC4274CUHF#TRPBF is a single-channel Power over Ethernet (PoE) Powered Device (PD) controller compliant with IEEE 802.3at standards. It integrates input current, voltage, and power telemetry for precise monitoring. The device operates within a supply voltage range of 3V to 3.6V and supports an operating temperature range from -40°C to 85°C. Packaged in a 38-pin QFN with an exposed pad, it facilitates efficient power management in PoE applications.

Feature Summary

• Integrates comprehensive telemetry for input current, voltage, and power monitoring
• Compliant with IEEE 802.3at PoE standards for powered device implementation
• Supports I2C interface for configuration and data access

Applications

• IEEE 802.3at Powered Device implementations
• Network infrastructure equipment requiring power telemetry
• Industrial control systems utilizing PoE power sources

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the CUHF grade corresponds to the commercial temperature range requirements of your design. Ensure compatibility with the host system's I2C addressing and voltage levels before integration.

Selection Notes

Select this component for designs requiring integrated power measurement without external sensors. It is suitable for space-constrained applications due to the compact QFN package. Consider the 38-pin layout and exposed thermal pad requirements during PCB layout to ensure proper heat dissipation and signal integrity.

Part Context

This part belongs to the Analog Devices LTC4274 family of PoE controllers. It serves as a specialized solution for managing power delivery over Ethernet cables while providing detailed energy usage data. It complements other PoE components by handling the PD side of the communication and power transfer protocol.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical specifications with alternative models from the same manufacturer or competitors before substitution.