MAX840ESA+T

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The MAX840ESA+T is a microprocessor supervisory and reset circuit developed by Maxim Integrated. It is part of the company’s MAX83 Series of device aimed at providing customers with a reliable power monitoring and reset solution. This particular device is a combination of the MAX840ESA microprocessor supervisory and its companion the MAX83T thermal-reset circuit. The combination of circuits allows for improved accuracy, temperature compensation and an easy-to-use solution for a wide range of applications.

Application Field

The MAX840ESA+T is suitable for any application where power monitoring and reset operations need to be performed. This device is especially useful when monitoring high-voltage systems such as those found in industrial and automotive applications. The MAX840ESA+T is also especially useful when monitoring hard reset conditions such as brownouts, power-on sequences, battery-voltage suppression, low-voltage detect and power-fail detect. It can also be used for other power-monitoring tasks such as detecting battery status, protecting against reverse-voltage transients or monitoring bus floating or sag conditions.

The MAX840ESA+T is also an ideal solution for embedded systems such as portable and hand-held devices or networked systems that require power monitoring and reset. The unique combination of the MAX840ESA and MAX837T allows for the device to intelligently manage reset and power turn-on to ensure that the system is graceful restarted even in the face of unexpected power changes.

Working Principle

The MAX840ESA+T is a combination of two circuits: the MAX840ESA microprocessor supervisory and the MAX83T thermal-reset circuit. The MAX840ESA is a configurable timing circuit and supervisor that can be programmed to detect or monitor power conditions. It can be configured as an active-low, open-drain reset or a monitor circuit capable of detecting brownouts, power-on sequences, battery-voltage suppression, low-voltage detect and power-fail detect. The MAX840ESA also features an internal temperature sensor and comparator which allows for the device to self-compensate for temperature and protect itself from any over-temperature conditions.

The MAX83T thermal-reset circuit is a low-cost and easy-to-use thermal reset solution. It\'s designed to provide over-temperature protection for electric, computer and industrial control systems by preventing components from operating outside specified temperature limits. It has adjustable latch up, latching and non-latching modes, which allows for system flexibility. With the combination of the MAX840ESA monitoring capabilities and the MAX83T’s protection against over-temperature conditions, the MAX840ESA+T offers customers a robust and reliable power monitoring and reset solution.

Conclusion

The MAX840ESA+T is a microprocessor supervisory and reset circuit suitable for a wide range of applications, especially those requiring high-voltage monitoring and reset operations. It combines the MAX840ESA microprocessor supervisory and its companion the MAX83T thermal-reset circuit, offering improved accuracy, temperature compensation and an easy-to-use solution. With the unique combination of the MAX840ESA monitoring capabilities and the MAX83T’s protection against over-temperature conditions, the MAX840ESA+T provides customers with a robust and reliable power monitoring and reset solution.

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