The LTC4278IDKD#PBF is a highly integrated Power over Ethernet (PoE) interface controller from Linear Technology, designed to simplify the implementation of Power over Ethernet functionality in networked devices. This advanced component is compliant with the IEEE 802.3at (PoE+) standard, ensuring compatibility with the latest PoE applications and devices.

Key Features

• IEEE 802.3at Compliant: The LTC4278IDKD#PBF is designed to meet the specifications of the IEEE 802.3at standard for PoE+, enabling it to deliver up to 25.5W of power to connected devices.
• Advanced Power Management: It includes sophisticated power management capabilities, such as inrush current control, programmable classification current, and under/over-voltage lockout, ensuring safe and reliable operation.
• Integrated Hot Swap Controller: The product features an integrated hot swap controller to safely connect and disconnect PoE power to the load, minimizing potential damage to the device and the power sourcing equipment.
• High Efficiency: Designed with efficiency in mind, the LTC4278IDKD#PBF minimizes power dissipation, which is critical for high-power PoE applications.
• Robust Protection Features: It is equipped with a comprehensive set of protection features, including thermal shutdown, current limit, and auto-retry, to safeguard both the powered device and the power source.

Applications

The LTC4278IDKD#PBF is suitable for a wide range of applications that require PoE capabilities. This includes network cameras, wireless access points, VoIP phones, and remote sensors. Its robust feature set and compliance with PoE+ standards make it an ideal choice for both new designs and upgrades to existing network infrastructures.

Quality and Reliability

Linear Technology's commitment to quality and reliability is reflected in the LTC4278IDKD#PBF. The device is available in a DFN package and is specified over a temperature range of -40°C to 85°C, ensuring performance across a wide range of environmental conditions.