LTC4279IS#TRPBF

Overview

The LTC4279IS#TRPBF is a single-port Power Sourcing Equipment (PSE) controller manufactured by Analog Devices Inc. It supports IEEE 802.3at (PoE+), 802.3af (PoE), and LTPoE++ standards. The device integrates a high-voltage power switch, class detection circuitry, and port management logic within a 16-lead SOIC package. Designed for surface-mount installation, it operates with a supply current of 1.7 mA. The component provides comprehensive protection features including overcurrent, thermal, and short-circuit safeguards to ensure reliable power delivery in network infrastructure applications.

Feature Summary

• Supports multiple PoE standards including 802.3at, 802.3af, and LTPoE++
• Integrates high-voltage power switch with built-in protection mechanisms
• Features precise class detection and port management logic

Applications

• Network switches and routers requiring PoE++ uplink ports
• Access points supporting advanced power delivery standards
• IP cameras and sensors utilizing LTPoE++ technology

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when sourcing from distributors. Confirm that the IS variant corresponds to the industrial temperature range specifications required for your application environment. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure authenticity and correct revision levels before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a single-port PSE solution with support for legacy and next-generation PoE standards. Consider the 16-lead SOIC package constraints regarding board space and thermal dissipation requirements. Evaluate the 1.7 mA operating current against system power budgets. Ensure compatibility with external transformer selection and PCB layout guidelines specified in the datasheet for optimal performance.

Part Context

This component belongs to the LTC4279 series of PoE controllers, designed to simplify integration into Ethernet infrastructure. It serves as a key element in modern networking hardware, enabling efficient power distribution over standard cabling. The series addresses the growing demand for higher power levels in connected devices while maintaining compliance with established industry protocols.

Replacement Considerations

LTC4279IUFD#TRPBF: Offers identical functionality in a 20-QFN package, suitable for designs requiring different footprint dimensions.