MAX801MCSA+

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PMIC - Supervisors provide system stability and enable autonomous recovery from unexpected power loss thus ensuring availability of electronics even in the harshest environments. MAX801MCSA+ is a supervisor chip designed to increase reliability of industrial systems.

This component monitors voltage levels and provides a reset output which triggers microcontroller reset when the voltage falls below a certain threshold. It also monitors the power supply and generates a reset signal when power fails so the microcontroller can be initialized and reset. This is extremely useful in systems where no manual intervention is allowed after a power loss.

The MAX801MCSA+ offers two programmable reset thresholds. The RESET_THRESHOLD parameter can be changed to configure the reset voltage level. The NWARN_THRESHOLD parameter can be set to create an interrupt and a warning that the power is close to failing. This feature allows the microcontroller to respond by starting the shutdown procedure.

The MAX801MCSA+ features a wide supply voltage range from 2.5V to 6V and offers excellent accuracy. It can accurately detect system faults down to 0.3V, and can be set high enough to measure under-voltage or over-voltages. Maximum time between reset triggers is 10 seconds, and the duration of the reset signal is 1.2 ms plus the time it takes for the supply to rise and settle.

The supervisor supports two different start-up recognition sources. The first is a reliable external VDD monitor that can be used to verify that the system is powered correctly, which is useful when the system can be subject to power glitches. The second is an external capacitor, which can be used to detect the start-up phase of the power supply stressing or accidental resets. In this case, the capacitor is charged and then discharged when the system is powered correctly.

The MAX801MCSA+ can be used in various industries, and most commonly in industrial automation, medical, automotive and aerospace applications. It is ideal for controlling safety-critical and mission-critical systems where power regulation and reset is required, and can help reduce system failure and down-time.

Overall, the MAX801MCSA+ is a useful tool for increasing the reliability of industrial systems. It offers precise reset triggering, low-voltage sensing, and protection against power glitches, and can be set up to monitor voltage levels in real-time and provide reset in case of a problem. All these features, combined with its wide supply voltage range and its ability to detect start-up indication sources make it a perfect choice for mission- and safety-critical applications.

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