Product Overview: LTC4263CDE-1#PBF from Linear Technology

The LTC4263CDE-1#PBF is a sophisticated single-channel Power over Ethernet (PoE) controller designed by Linear Technology, now part of Analog Devices, for managing power delivery over Ethernet networks. This integrated circuit is specifically tailored for applications requiring IEEE 802.3af compliance, which is the standard protocol for PoE. It allows network devices such as IP cameras, wireless access points, and VoIP phones to receive power along with data over standard Ethernet cables, reducing the need for additional power supplies and wiring.

Key Features

• IEEE 802.3af Compliant: The LTC4263CDE-1#PBF meets the specifications of the IEEE 802.3af standard, ensuring compatibility with other compliant devices in a PoE system.
• Integrated Switching Regulator: This device includes an onboard switching regulator to efficiently convert the higher voltage on the Ethernet cable to a lower voltage suitable for the powered device.
• Signature Resistor Detection: It features signature resistor detection, a safety mechanism that prevents power from being applied to non-PoE capable devices.
• Programmable Power Limit: Users can set a power limit to prevent overconsumption of power, which is particularly useful for managing power budgets on a network.
• Robust Protection Features: The LTC4263CDE-1#PBF includes overcurrent protection, thermal protection, and under/overvoltage lockout, ensuring the safety and reliability of the powered device and the PoE system.

Applications

The LTC4263CDE-1#PBF is ideal for a variety of applications that require remote power delivery. It is commonly used in:

• Networked Security Cameras
• Wireless Access Points
• VoIP Phones
• Industrial Controls
• Point of Sale (POS) Systems

This PoE controller is packaged in a compact 12-lead DFN (4mm x 3mm) package, which is suitable for space-constrained applications. Its advanced feature set and compliance with the IEEE 802.3af standard make the LTC4263CDE-1#PBF an excellent choice for network designers and engineers looking to integrate PoE capabilities into their products.