LTC4267CGN-1#TRPBF

Overview

The LTC4267CGN-1#TRPBF is a Power over Ethernet Powered Device controller compliant with IEEE 802.3af standards, housed in an SSOP-16 package. It integrates a switching regulator capable of delivering up to 375 mA output current with a maximum on-resistance of 2 Ohms. The device operates within a voltage range of -57 V and supports duty cycles up to 90%. Designed for surface mount installation, it functions reliably between 0°C and +70°C.

Feature Summary

• Integrates IEEE 802.3af Powered Device interface with an internal switching regulator
• Includes integrated power switch for direct connection to Ethernet lines
• Provides comprehensive protection against reverse polarity and overcurrent conditions

Applications

• PoE-powered network endpoints such as VoIP phones
• Wireless access points requiring IEEE 802.3af compliance
• Network surveillance cameras powered via Ethernet cabling
• Industrial IoT sensors utilizing PoE infrastructure

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging rather than tube configuration when sourcing. Confirm that the CGN variant meets the required commercial temperature range specifications. Ensure compatibility with existing IEEE 802.3af power sourcing equipment before integration into final designs.

Selection Notes

Select this component for applications requiring a compact solution that combines PoE detection with DC-DC conversion. Consider the SSOP-16 footprint constraints and thermal performance requirements. Evaluate the 375 mA current limit against peak load demands to ensure adequate headroom for stable operation under varying line conditions.

Part Context

This part belongs to the LTC4267 series of PoE controllers designed by Analog Devices. It serves as a complete interface solution for powered devices, eliminating the need for external control logic. The series is widely used in networking hardware where space efficiency and regulatory compliance are critical design factors.

Replacement Considerations

Public confirmed substitute part numbers: LTC4267IGN-1#PBF, LTC4267CDHC-1#PBF.