LTC4266AIUHF-1 is a quad-port PoE PSE controller compliant with IEEE 802.3af/802.3at, ideal for enterprise PoE switches, IP cameras, and industrial Ethernet systems.

Product Overview

     The LTC4266AIUHF-1#TRPBF is a highly integrated Power over Ethernet (PoE) Power Sourcing Equipment (PSE) controller from Analog Devices. Designed to manage and deliver power to multiple powered devices (PDs) over standard Ethernet cabling, it supports up to four PoE ports and complies with IEEE 802.3af/802.3at standards. The device integrates detection, classification, power control, and fault management, significantly simplifying PoE system design for enterprise and industrial networking equipment.

Key Features

• Quad-port PoE PSE controller
• Compliant with IEEE 802.3af / 802.3at standards
• Integrated PD detection and classification
• Programmable power allocation and current limiting
• Advanced fault protection (overcurrent, short-circuit, thermal)
• Supports power management and port prioritization
• I²C interface for system configuration and monitoring
• Designed for enterprise and industrial PoE switches
• Compact QFN / UHF package
• Industrial temperature range
• Tape & Reel packaging (TRPBF)
• RoHS compliant

Applications

• PoE Ethernet switches and injectors
• Enterprise networking equipment
• IP cameras and surveillance systems
• Wireless access points (WAP)
• Industrial Ethernet and automation networks
• Smart building and infrastructure systems

Electrical Summary