LTC4267CGN#TRPBF

Overview

The LTC4267CGN#TRPBF is a Power over Ethernet (PoE) Powered Device controller compliant with IEEE 802.3af standards, manufactured by Analog Devices Inc. It integrates a current-limited high-side switch and operates within an input voltage range of 44V to 57V. The device features a 2-ohm maximum on-resistance and supports up to 375mA of output current. Designed for surface-mount installation in SSOP-16 packages, it functions reliably across temperatures from 0°C to +70°C, providing essential power management for networked equipment.

Feature Summary

• Integrates IEEE 802.3af compliant Powered Device logic with a current-limited high-side switch
• Provides precise classification and detection capabilities for PoE networks
• Includes internal soft-start circuitry to manage inrush currents during connection

Applications

• IP cameras and video surveillance systems
• Wireless access points and network switches
• VoIP telephones and communication endpoints

Procurement Notes

Verify the specific suffix against official documentation to confirm tape-and-reel packaging versus tube variants. Ensure the component meets RoHS directives for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit sources. Confirm that the SSOP-16 footprint matches your PCB design requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring strict adherence to IEEE 802.3af power budgets. The integrated switch simplifies bill-of-materials by removing external MOSFETs. Consider the thermal performance of the SSOP-16 package relative to your enclosure constraints. Verify compatibility with your downstream DC-DC converter requirements given the fixed input voltage window.

Part Context

This part belongs to the LTC4267 family of PoE controllers, which are designed to simplify the implementation of powered devices in Ethernet networks. Unlike generic switches, these ICs handle the complex negotiation and classification phases required by PoE standards. The CGN variant specifically denotes the commercial temperature range and SSOP-16 package configuration offered by Analog Devices.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.