Maxim Integrated MAX6802UR29D2+T Microprocessor Reset Circuits

The Maxim Integrated MAX6802UR29D2+T is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications by ensuring that the µP boots up in a known state every time. This device is particularly useful for managing system resets by monitoring the system voltage and asserting a reset signal whenever the monitored voltage drops below a predefined threshold.

This particular model, the MAX6802UR29D2+T, comes in a compact SOT-23 package, making it an ideal choice for space-constrained applications. It features a preset reset threshold voltage of 2.925V, tailored to maintain system integrity and prevent erroneous operations during power fluctuations. The reset output remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold level, ensuring a proper system reset. This timing is crucial for systems that require a guaranteed reset pulse width to allow adequate stabilization time for the power supply and the processor.

With its low supply current of only 1.2µA (typical), the MAX6802UR29D2+T is optimized for battery-powered and portable applications, where power efficiency is a critical parameter. It operates over a wide voltage range from 1.2V to 5.5V, giving it the flexibility to be used in various systems with different power requirements.

Additional features of the MAX6802UR29D2+T include the ability to assert a reset signal upon manual activation through a manual reset input. This feature is beneficial for systems that require a user-initiated reset or for initiating a reset sequence during routine maintenance without cycling the power supply.

Overall, the Maxim Integrated MAX6802UR29D2+T is a robust and precise solution for system reset management. Its low power consumption, small footprint, and wide operating voltage range make it a versatile component for integrating into a multitude of microprocessor-based systems, ensuring reliable operation and system stability.