LTC4267IGN#TRPBF

Overview

The LTC4267IGN#TRPBF is a Power Over Ethernet (PoE) Powered Device (PD) controller designed for IEEE 802.3af compliant applications. It integrates a 300kHz current-mode switching regulator to provide a complete power solution. The device operates with input voltages up to 57V and supports Class 0 through Class 3 PD classifications. It features an integrated high-side switch, programmable current limit, and thermal shutdown protection. The component is available in a 16-lead DFN package.

Feature Summary

• Integrates an IEEE 802.3af compliant PD interface with a 300kHz current-mode switching regulator
• Includes an integrated high-side switch for simplified circuit design
• Provides programmable current limiting and thermal shutdown protection

Applications

• IEEE 802.3af Powered Device interfaces
• Network infrastructure equipment requiring PoE power
• IoT devices powered via Ethernet cables

Procurement Notes

Verify the specific suffix 'IGN' against official Analog Devices documentation to confirm temperature range and packaging details. Ensure compatibility with the intended PCB footprint and soldering profile. Cross-reference the datasheet revision date to confirm feature availability and electrical characteristics match project requirements before finalizing procurement.

Selection Notes

Select this component when a combined PoE detection and DC-DC conversion solution is required for IEEE 802.3af systems. It is suitable for designs needing an integrated switch to reduce external component count. Consider the operating temperature range and package size constraints relative to the target application environment.

Part Context

This part belongs to the LTC4267 family of PoE controllers from Analog Devices. It is functionally similar to other variants like the LTC4267CDHC-3 but may differ in temperature rating or package type. It serves as a core power management IC for network endpoints receiving power over Ethernet lines.

Replacement Considerations

LTC4267CDHC-3#TRPBF

FAQ

What IEEE standard does the LTC4267 support?

The LTC4267 is compliant with the IEEE 802.3af standard for Powered Devices.

Does the LTC4267 include a switching regulator?

Yes, it integrates a 300kHz current-mode switching regulator alongside the PD interface.