LTC4267IDHC#PBF

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Introduction

LTC4267IDHC#PBF is a highly integrated and cost-effective Power Over Ethernet (PoE) controller designed to meet the most commonly used PoE standards. It supports both Type 1 (Type 1) and Type 2 (4-pair) PoE modes, providing an elegant alternative to managing multi-port PoE systems.

Application Field

The LTC4267IDHC#PBF is mainly used in FTTx optical networks, IP cameras, VoIP phones, access points, security systems, WiMAX, medical and industrial automation applications. It can also be used in battery-powered PoE applications, guaranteeing efficient power management, while providing superior tolerance to the hazards of field installation and operation.

Working Principle

The LTC4267IDHC#PBF contains two integrated DC-DC converters that provide up to 60 Watts per port and up to 10 watts per port on four Type 1 ports and two Type 2 ports, respectively. It is capable of recognizing Type 1 and Type 2 powered devices as well as detecting link faults and reporting them over a digital interface. The LTC4267IDHC#PBF also provides an integrated circuit (IC) for measuring the power deriving from the source, providing time and temperature stable current limiting, user adjustable current limiting, and power and current monitoring.

Performance Features

The LTC4267IDHC#PBF provides a highly efficient power delivery system with very low quiescent currents. It also features an on-chip ESD protection rating of 2 kV HBM, providing superior protection and superior tolerance of RF interference. Additionally, it contains an adaptive driver adaptive circuitry which adjusts the drive voltage based on the port PD power, minimizing EMI generation.

Conclusion

The LTC4267IDHC#PBF is an ideal power over Ethernet (PoE) controller for cost-sensitive applications. It is a cost-effective, high performance and highly reliable device which provides all the necessary features for PoE applications. With high efficiency, superior ESD protection, and low quiescent current, it is the perfect choice for FTTx optical networks, IP cameras, VoIP phones, access points, security systems, WiMAX, medical and industrial automation applications.

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