MAX6804US31D2+T

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Power management integrated circuit (PMIC) supervisors are designed to protect microprocessors from voltage overloads and to maintain clock, reset, and supply voltage levels so that essential electronic devices function as intended. This article will discuss the application field and working principle of one particular PMIC, the MAX6804US31D2+T.

Application Field

The MAX6804US31D2+T is a low-cost micropower supervisor that provides microprocessor voltage monitoring and power supply supervisor monitoring. It is designed to operate at voltages of 3.3V to 5.5V, making it suitable for a wide variety of different applications. The device provides two independent over and undervoltage comparators that assert active-low reset and active-low power good signals if input power drops below the reset threshold or is shorted to supply voltage, providing protection for the microprocessor or other electronics connected to it.

The MAX6804US31D2+T can be used in industrial control systems, telecommunications, networking, automotive and other applications that require voltage monitoring and power supply supervisor monitoring. It is also suitable for portable and low power applications, thanks to its low power consumption of 1µA.

Working Principle

The working principle of the MAX6804US31D2+T is fairly straightforward. The device has two independent over and undervoltage comparators that compare the input voltage to a reference set by the user and assert an active-low reset signal if the voltage is lower than the set reference voltage. It also has an active-low power good signal that is asserted when the input voltage is within a certain tolerance of the reference voltage.

The device is designed to provide extended reset cycle time, designed to allow the microprocessor to reset and start up in a reliable manner. It also features overvoltage protection, which prevents damage to the device due to an overvoltage condition. It also has an adjustable timeout for its reset signal, allowing the user to set the desired reset duration.

The device has an adjustable reset threshold, which is set by the user based on their application’s needs. It also has three reset assertion circuit options, which can be used to increase the failure detection rate, improve reliability, and reduce the response time of the device. The MAX6804US31D2+T is available in a small package that allows it to be used in space-constrained applications.

Conclusion

The MAX6804US31D2+T is a micropower supervisor designed to provide microprocessor voltage monitoring and power supply supervision. It has two independent over and undervoltage comparators that assert active-low reset and active-low power good signals, providing protection for the microprocessor or other electronics connected to it. It also has adjustable reset threshold, overvoltage protection, and adjustable timeout for reset signal, allowing it to be used in a variety of applications.

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