MAX6833FXRD0+T

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The MAX6833FXRD0+T is a supervisor integrated circuit integrated with a voltage detector and a watchdog timer. It functions digitally and is used to monitor the power supply voltage of on-board CPUs and other systems components. This supervisor helps alert system controllers of any dangerous unexpected power supply or malfunction, allowing for proper corrective measures to be taken. The MAX6833FXRD0+T belongs to the category of Power Management Integrated Circuits (PMICs) as its main purpose is to protect sensitive electronic components from excessive power, or sudden power failure. As PMICs, the MAX6833FXRD0+T packages integrated functions such as protection from overvoltage, under voltage, reverse voltage, and other disturbances.

The MAX6833FXRD0+T application field focuses on power supplies in automotive, avionic, industrial, and many other applications. It operates at 1.14V to 5.5V supplies and features an integrated watchdog timer and two window protect pins. The built-in timer monitors the activity of glue logic, ensuring components are properly powered. In addition, the two window protect pins provide protection against voltage overshoots and avalanche blocking. The window protect pins are reset to the original state within a predetermined period of time, restoring normal operation.

The working principle behind the MAX6833FXRD0+T revolves around its integrated voltage detector. This detector is designed to monitor a wide range of supply voltages, and provide an active-high Reset and Window Protect signal when a voltage outside the normal operating range is detected. The Max6833FXRD0+ is also activated by a supply bias voltage up to 7V. In unison, the monitor imposes a reset on the device upon power supply deviation beyond the specified threshold. The reset is held in active-low state and released when operating conditions return to within the normal range.

Furthermore, the watchdog timer embedded within the MAX6833FXRD0+T is used to monitor the system power state. The timer constantly samples the system status, evaluating whether the system has run into a no-operation state, due to an unexpected power failure, or some other operational issue. If such a malfunction is detected, the resulting reset or protection signal is generated and sent to the system controller. The controller, upon receiving this reset, is capable of take corrective measures.

The combination of the integrated voltage detector and watchdog timer embedded within the MAX6833FXRD0+T makes it an ideal choice for automotive, avionic, and industrial applications. Its low active supply current and extended temperature range boasts superior performance and makes it an essential device in power supply management.

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