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LTC4278CDKD#PBF

LTC4278CDKD#PBF Description

The LTC4278CDKD#PBF from Analog Devices Inc. is a highly integrated Power over Ethernet (PoE) controller designed for Powered Device (PD) applications. This surface-mount IC operates within a 37.2V to 60V supply range and complies with IEEE 802.3af (PoE) and 802.3at (PoE+) standards, delivering up to 25.5W of power. Housed in a 32DFN package, it features a single-channel architecture with an internal DC/DC controller and auxiliary sense capability, ensuring efficient power management. With a low 1.35mA (max) supply current and RoHS3 compliance, it is optimized for energy-efficient and environmentally conscious designs.

LTC4278CDKD#PBF Features

• Single-Channel PD Controller: Integrates both PD interface and DC/DC converter for compact designs.
• Wide Input Voltage Range (37.2V–60V): Supports flexible deployment in PoE/PoE+ systems.
• Low Power Consumption: 1.35mA max supply current enhances efficiency.
• Auxiliary Sense: Enables precise power monitoring and control.
• Internal Switches: Reduces external component count, simplifying PCB layout.
• Robust Compliance: Meets IEEE 802.3af/at standards for interoperability.
• Industrial Reliability: 0°C to 70°C operating temperature and MSL 1 (Unlimited) moisture sensitivity.

LTC4278CDKD#PBF Applications

• IP Cameras & Surveillance Systems: Reliable power delivery for always-on devices.
• Wireless Access Points: Streamlined power integration in network infrastructure.
• VoIP Phones: Efficient, standards-compliant power sourcing.
• IoT Edge Devices: Compact, low-power solutions for smart sensors and gateways.
• Industrial Automation: Robust performance in harsh environments.

Conclusion of LTC4278CDKD#PBF

The LTC4278CDKD#PBF stands out as a highly efficient, feature-rich PoE PD controller, ideal for modern networked devices. Its integrated DC/DC converter, auxiliary sense, and compliance with PoE+ standards make it superior to discrete solutions, reducing design complexity and BOM cost. Whether for IP cameras, wireless APs, or IoT devices, this IC delivers reliable, scalable power management in space-constrained applications. Its RoHS3 compliance and industrial-grade specs further ensure suitability for sustainable and demanding environments.