LT4275AHDD#PBF

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Introduction

The LT4275AHDD#PBF (LT4275) is a power management integrated circuit (PMIC) developed and manufactured by Linear Technology Corporation. This device is a power over Ethernet (POE) controller, which integrates an integrated Ethernet controller and Ethernet PHY. It is designed for applications such as office equipment and medical equipment.

Application Field of LT4275AHDD#PBF

The LT4275AHDD#PBF offers a complete solution for a variety of applications, including office equipment, medical equipment, and industrial instrumentation. It is designed for powering systems that use Ethernet ports for data and power transmission. The POE controller supports both the standard IEEE802.3af compliant 15 watt and IEEE802.3at compliant 25 watt POE specifications. It also supports advanced POE features such as power prioritization, pre-standard 30 watt and 55 watt modes, and optimized energy efficiency.

The POE controller also includes integrated support for intelligent power management and advanced power control features. This allows applications to optimize power consumption and manage power prioritization. The controller provides support for both current and voltage control. It allows application designers to easily program their systems to manage power in different environmental conditions.

The controller is also specialized for equipment that uses Ethernet ports to transmit data and video signals. It supports up to four independent Ethernet ports, providing support for up to four simultaneous HD video streams. Each port supports up to 1.25 Gbit/s bandwidth. The controller also supports link aggregation and dynamic bandwidth allocation, allowing for smooth performance and efficient use of bandwidth.

Working Principle of LT4275AHDD#PBF

The LT4275AHDD#PBF integrates an Ethernet controller, PHY, and power management circuitry that work together to provide a complete solution for POE applications. The controller provides power to the connected device by controlling the voltage, current, and energy levels of the system. The power supply is managed by a DC-DC converter that converts an input voltage into a regulated output voltage that is specific to the application.

The controller also features an integrated Ethernet controller and PHY that work together to process Ethernet packets and provide a link between the system and the Ethernet network. The controller can process up to four independent Ethernet ports and support up to 1.25 Gbit/s bandwidth each. The controller also supports link aggregation and dynamic bandwidth allocation.

The LT4275AHDD#PBF also features intelligent power management features, such as power prioritization, pre-standard 30 watt and 55 watt modes, and optimized energy efficiency. The controller also supports advanced monitoring and control functions, allowing designers to optimize their systems and manage power consumption in different environmental conditions.

In conclusion, the LT4275AHDD#PBF is an excellent Power Over Ethernet (POE) controller that offers a complete solution for powering systems that use Ethernet ports for data and power transmission. It includes an integrated Ethernet controller, PHY, power management circuitry, and intelligent power management features. The controller is specialized for equipment that uses Ethernet ports to transmit data and video signals, and supports up to four independent Ethernet ports with up to 1.25 Gbit/s bandwidth each. The controller also supports advanced features such as link aggregation, dynamic bandwidth allocation, power prioritization, pre-standard 30 watt and 55 watt modes, and optimized energy efficiency.

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