LTC4267IGN-3#TRPBF

Overview

The LTC4267IGN-3#TRPBF is a Power Over Ethernet (PoE) Powered Device (PD) interface controller manufactured by Analog Devices Inc. It integrates an IEEE 802.3af compliant PD interface with a 300kHz current mode switching regulator. The device operates within a supply voltage range up to 57V maximum and draws a maximum supply current of 3mA. It supports an operating temperature range from -40°C to +85°C and utilizes a surface mount package.

Feature Summary

• Integrates IEEE 802.3af compliant Powered Device interface
• Includes internal 300kHz current mode switching regulator
• Supports hot insertion and removal without system disruption

Applications

• IEEE 802.3af Powered Device power management
• Network infrastructure equipment power input
• IoT devices requiring PoE connectivity

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the -3 variant designation matches the required output voltage or control configuration for your design. Ensure compatibility with existing IEEE 802.3af standards before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring integrated PoE detection and regulation in a compact form factor. Consider the 300kHz switching frequency for inductor size trade-offs. Verify thermal performance requirements against the specified operating temperature range of -40°C to +85°C for industrial applications.

Part Context

This part belongs to the LTC4267 family of PoE controllers. It serves as a complete solution for powering networked devices via Ethernet cables, combining classification, detection, and regulation functions. It replaces discrete solutions that previously required separate controllers and switcher ICs.

Replacement Considerations

Check for direct pin-compatible upgrades within the LTC4267 series. Verify if alternative variants like the LTC4267IGN-1 or LTC4267IGN-2 offer different regulatory features while maintaining the same interface compliance.