MAX6388XS26D2-T

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PMIC (Power Management Integrated Circuits) are control circuits that take power from a source such as a battery or other power source and convert it into usable voltages for a microcontroller or other integrated circuit. Supervisors are a class of PMICs responsible for monitoring the voltage and current supplied to a microcontroller, making sure there is not too much or too little, and also providing system reset in case of power outages or voltage spikes. MAX6388XS26D2-T is a supervisor PMIC that provides a variety of functions, including system reset, monitoring, and reset hold delay control.

Applications

The MAX6388XS26D2-T is designed specifically to be used as a system supervisor in automotive, industrial, and consumer applications. Industrial applications range from office equipment to agricultural machinery and medical devices. In automobiles, the MAX6388XS26D2-T is found in engine control units, throttle position sensors, and airbag controllers. In consumer electronics, the MAX6388XS26D2-T is employed in digital video recorders, digital cameras, and personal navigation devices.

Main Features

The MAX6388XS26D2-T is a CMOS/BiCMOS-compatibile system supervisor with a programmable reset timeout period and an adjustable reset threshold. It also has a watchdog timer and a Power-Fail Comparator with a manual reset input.

The MAX6388XS26D2-T has programmable reset timeout periods and reset thresholds, allowing the system designer to fine-tune the circuit\'s response to over-temperature and over-voltage conditions. It also provides manual reset functionality by way of an external reset switch.

The MAX6388XS26D2-T also boasts a built-in watchdog timer, which monitors system stability and performs reset functions in case of a deadlock. It also has a Power-Fail Comparator which monitors voltage levels and triggers reset when the supply input is low. Finally, the MAX6388XS26D2-T has an adjustable Reset Hold Delay control, allowing for reset hold time configuration.

Working Principle

The MAX6388XS26D2-T monitors system voltage levels to ensure acceptable operating conditions. It is designed to prevent damage due to excessive voltage or temperature levels and reset the system when conditions become critical. The MAX6388XS26D2-T monitors the system power supply and triggers a reset when the input supply drops below a certain threshold. The reset timeout period and reset threshold can be programmed using the RESET_TO and RESET_THRESHOLD pins, respectively.

The watchdog timer monitors system stability and performs reset functions in case of a deadlock. It has an adjustable timeout period and can be configured to trigger resets after a certain period of time. The Power-Fail Comparator monitors the power supply input and triggers reset when the supply drops below a certain level.

The MAX6388XS26D2-T also provides manual reset functionality by way of an external reset switch. When the external reset pin is driven high, the MAX6388XS26D2-T will assert reset and hold it until the pin goes low again. Lastly, the Reset Hold Delay Control allows for configuration of the reset hold time.

Conclusion

The MAX6388XS26D2-T is a CMOS / BiCMOS-compatible system supervisor PMIC built for use in a variety of automotive, industrial, and consumer applications. It is designed to manage runtime power-supply inputs and provide system reset in case of power outages, over temperature, over-voltage, or deadlock. The circuit features programmable reset timeout periods, reset thresholds, manual reset, a watchdog timer, and a Power-Fail Comparator, as well as adjustable reset hold delay control.

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