MAX5972BETE+T

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MAX5972BETE+T is a highly integrated and feature-rich Power over Ethernet (PoE) Controllers designed specifically for PoE applications. It integrates a PoE Ethernet transceiver, a PoE controller and power supply, as well as a host of functional blocks, including a voltage regulator, transient voltage suppressor, current limit, and state machine control.

The MAX5972BETE+T integrates a programmable, low-side current-sense amplifier, with adjustable peak and valley thresholds, to quickly initiate PoE power delivery while protecting the upstream source and the downstream port. The MAX5972BETE+T also features an integrated DC power-on latch and a sequential state machine with programmable state transitions using the VICNAME pin, allowing the user to control the power-up sequence of the system. Finally, the MAX5972BETE+T provides an integrated *Secondary Protection Circuit with monitoring of the PoE load and power-good output signaling.

MAX5972BETE+T is ideal for applications requiring compliance with the IEEE 802.3 and 802.3af standards for Power-over-Ethernet (PoE) systems. It enables designers to meet the stringent requirements for power delivery, thermal protection, and surge protection in today’s PoE networked systems. The device also minimizes billed energy costs and simplifies power budgeting by providing an optimized solution for delivering high-current, high-efficiency power delivery in a single integrated package.

In particular, the MAX5972BETE+T offers a variety of features that help ensure safe and reliable operation during times of power loss or brownouts. The device includes a programmable maximum current limit and a transient voltage suppressor to protect the PoE port and upstream source from voltage surges. Additionally, the MAX5972BETE+T includes an integrated voltage regulator to ensure a regulated power supply regardless of input voltage. This protects the PoE port and upstream source from fluctuations in power supply voltage.

The MAX5972BETE+T features an integrated DC power-on latch and a sequential state machine with programmable state transitions using the VICNAME pin, allowing the user to control the power-up sequence of the system. The MAX5972BETE+T also provides an integrated secondary protection circuit with monitoring of the PoE load and power-good output signaling. This feature ensures safe and reliable operation regardless of input power supply or load conditions.

The MAX5972BETE+T is used in many different types of industrial, commercial and residential applications. Some of the most common applications are Power-over-Ethernet (PoE) systems, such as security cameras, PoE switches, access control systems, and many more. The MAX5972BETE+T can also be used in applications such as TV and stereo systems, lighting, automation, and energy management.

In order to use the MAX5972BETE+T, designers must have a thorough understanding of the underlying Power-over-Ethernet (PoE) standard. This includes the requirements of IEEE 802.3 and 802.3af, as well as the power delivery, thermal protection, and surge protection features of the device. Additionally, designers must understand the operating environment, power budgeting and safety considerations related to power delivery in a system.

To summarize, the MAX5972BETE+T is a highly integrated and feature-rich PoE controller designed for PoE applications. It integrates a programmable low-side current sense amplifier, voltage regulator and transient voltage suppressor, state machine control, and a secondary protection circuit, enabling designers to meet the stringent requirements for power delivery, thermal protection, and surge protection in today’s PoE networked systems. The MAX5972BETE+T is ideal for applications requiring compliance with IEEE 802.3, 802.3af and other related standards, as well as applications such as security cameras, PoE switches, access control systems, and many more.

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