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PMIC-Supervisors

The MAX6321HPUK46CY+T is a supervisor circuit designed to monitor system power. It is designed to monitor voltage supply voltage VCC and reset outputs when the VCC is outside of the specified range. The circuit consists of a voltage supervisor, a timer, and a reset control.

Application field

The MAX6321HPUK46CY+T is a widely used supervisor circuit for many applications. It is commonly used for processor reset and power supply monitoring for handheld and battery powered devices such as cell phones, PDA, MP3 players, and digital cameras. It is used to monitor the 3.3 V DC supply voltages in most embedded system. It is also used to monitor the 5V, 12V and 24V DC supply voltages in automotive and industrial control systems as well as consumer electronic devices.

Features

The MAX6321HPUK46CY+T supervisor circuit provides a wide range of features. It has an adjustable reset threshold to detect over and under voltage conditions for input voltages between 1.8V and 5.5V. It also has a Watchdog Timer for resetting a system when it is no longer functioning. It has an open-drain reset output that can be controlled with an active-low input. Finally, the MAX6321 is available in a space-saving 6-pin TDFN package.

Working Principle

The MAX6321HPUK46CY+T supervisor circuit operates by comparing the supply voltage VCC that is monitored to the voltage threshold voltage VTH. If VCC falls below the VTH level, then the reset output goes active and pulls down the reset line. The reset output then remains active and causes the system to be reset. If VCC rises above the VTH level, the reset output goes inactive and the reset line is released.

The MAX6321HPUK46CY+T is also equipped with a watchdog timer for detecting system faults. When the watchdog timer is enabled, it will reset the system if it does not receive a signal within a certain period of time. This allows the system to remain in a reset state until a valid signal is received.

The MAX6321HPUK46CY+T reset control also features an open-drain reset output that can be controlled with an active-low input. This allows the user to manually reset the system by applying a low signal to the reset control input.

Conclusion

The MAX6321HPUK46CY+T is a versatile supervisor circuit designed to monitor system power. It is designed to monitor voltage supply voltages, reset outputs, and provide a watchdog timer function when needed. It is widely used in many applications, ranging from consumer electronics to automotive and industrial control systems. The MAX6321HPUK46CY+T supervisor circuit offers a wide range of features such as adjustable reset threshold and an open-drain reset output, allowing it to be used in a variety of situations.

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