LM5073MHX/NOPB

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LM5073MHX/NOPB is a Power Management Integrated Circuit (PMIC) made specifically for Power Over Ethernet (PoE) Controllers. This chip allows for more efficient PoE deployment as it integrates both controllers for PoE and DC-DC converters for high-power applications. With its high power efficiency, the LM5073MHX/NOPB is the ideal choice for applications that require the highest levels of energy efficiency and reliability over long periods of operation.

Powered by a low-noise, low-power operating voltage range of 1.3V to 3.3V, the LM5073MHX/NOPB further ensures a reliable and energy-efficient operation. Additionally, with its built-in over-temperature protection, the device limits power dissipation and avoids any critical failure in extreme conditions.

The LM5073MHX/NOPB houses a PD Controller, a DC-DC converter, and a SmartPD control block that help to provide the required performance for PoE applications. The PD Controller is designed to control a single PoE port for PoE, PoE+, and 802.3af conformance. This PD Controller draws just 9 micro-amps (µA) of quiescent current for efficient operation even when no input power is present.

The DC-DC converter of the LM5073MHX/NOPB employs a switched-capacitor voltage-conversion topology that features high efficiency and low-output noise. Its very low quiescent current ensures that the device provides efficient, long-term operation, with power savings of up to 75 percent. Additionally, the device also offers excellent EMI performance, and the hassle-free PCB layout helps to reduce the cost of implementation.

The SmartPD control block of the LM5073MHX/NOPB is a control IC that manages the entire process of the PD, ensuring that each and every port receives the required power. Its native SmartPD Controller tracks the entire process from the moment the device is powered on till it is powered off in a very efficient manner. Furthermore, the smartPower algorithm incorporated in the device allows it to detect different types of PoE classifications and configure the DC-DC converter appropriate to the power needs.

The LM5073MHX/NOPB is ideal for a range of PoE applications such as IP surveillance cameras, Wi-Fi access points, small form-factor PCs, industrial automation, and healthcare devices. With its high levels of efficiency, this device helps designers to meet stringent energy-consumption regulations, whilst greatly reducing system cost, eliminating external components such as filters, and simplifying the power-management architecture.

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