MAX6865UK25D1S+T

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Power-Management Integrated Circuits (PMICs) are a category of integrated circuits (ICs) designed to manage the power supply for different systems in various applications. The MAX6865UK25D1S+T IC is a PMIC specifically designed for mobile phones and other mobile devices. It is a 5V supervisor that provides a host of features designed to simplify system design, reduce total system cost and minimize board size. In this article, we will be looking at the application field and working principle of the MAX6865UK25D1S+T.

Application Field

The MAX6865UK25D1S+T IC is intended for use in mobile phones and other mobile devices, where power consumption and size are of great concern. It features a low quiescent current of 0.7µA, making it extremely efficient. Its active current is also very low, at only 15µA. The IC includes an active-low RESET output that can be used to reset both digital and analog circuits. It also includes a wide range of operating supply voltages, from 2.1V to 5.5V, allowing for greater system flexibility. Finally, the MAX6865UK25D1S+T has integrated battery-level monitoring and protection, making it perfect for use in mobile devices with battery power sources.

Working Principle

The MAX6865UK25D1S+T is designed to constantly monitor the power supply, resetting the system whenever the supply appears to be failing or the battery is too low. The IC has two voltage regulators, the supply voltage regulator and the reset voltage regulator.The supply voltage regulator constantly monitors the system supply voltage and notifies the microcontroller or other digital circuitry when the voltage drops below the desired operating level. The reset voltage regulator is connected to a reset pin, which when assed asserts a reset to the digital circuitry. It also monitors the battery voltage and disables the reset when the battery reaches a predetermined threshold. Finally, the MAX6865UK25D1S+T also monitors a system temperature sense line and may disable the reset if the temperature rises above a predetermined level.

The MAX6865UK25D1S+T IC is a great solution for mobile devices and other systems where power consumption and size are of concern. Its low quiescent and active current make it very efficient, while its two voltage regulators and battery-level monitoring provide system protection. It is a great solution for designers looking to reduce system costs and minimize board size.

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