The MAX6863UK28+ is a compact, high-precision microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. This device ensures that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions, thus enhancing the reliability of the system.

Key Features

• Voltage Monitoring: The MAX6863UK28+ actively monitors the supply voltage and keeps the µP in reset mode until the system voltage is stable within acceptable levels, specifically at 2.8V, which is ideal for 3V systems.
• Manual Reset Input: An external manual reset input allows for a system reset to be initiated with an external pushbutton or logic signal, providing additional system control.
• Low Power Consumption: With its low supply current of only 1.2µA, the device is suitable for power-sensitive applications, extending battery life in portable devices.
• High Accuracy Reset: The MAX6863UK28+ features an accuracy of ±1.5% over temperature, ensuring reliable monitoring and control of the reset function.
• Immunity to Short Vcc Transients: The device is designed to ignore fast transients on the Vcc line, preventing unnecessary resets due to noise and brief voltage dips.

Applications

The MAX6863UK28+ is versatile and can be used in a range of applications, including:

• Portable/Battery-Powered Equipment
• Computers and Controllers
• Embedded Systems
• Data Storage Equipment
• Industrial Controllers

Package and Availability

This device comes in a small SOT-23 package, making it ideal for space-constrained applications. Its extended temperature range of -40°C to +125°C allows for operation in extreme environments. The MAX6863UK28+ is available for purchase through Maxim Integrated's authorized distributors.

Conclusion

The Maxim Integrated MAX6863UK28+ provides a reliable and precise solution for system reset management. With its low power consumption, high accuracy, and manual reset feature, it meets the requirements of a wide array of applications, ensuring that digital systems maintain optimal functionality and stability.