Maxim Integrated's MAX6420UK26+ Microprocessor Supervisory Circuit

The MAX6420UK26+ is a compact, highly reliable supervisory circuit designed by Maxim Integrated, engineered to monitor power supplies in microprocessor (µP) and digital systems. It provides a significant layer of protection by ensuring that the µP boots up in a known state and operates within safe voltage levels. This device is particularly suitable for portable, battery-operated, and space-constrained applications due to its small SOT23 package.

Key Features

• Voltage Monitoring: The MAX6420UK26+ supervises a +2.5V power supply, with a precision factory-set reset threshold voltage of 2.63V, ensuring that the system operates within a safe voltage range.
• Manual Reset Input: It offers a manual reset input feature, allowing for an external trigger to initiate a system reset, providing designers with added control over system behavior.
• Reset Timeout: The device guarantees a minimum power-on reset timeout of 140ms, which gives the system adequate time to stabilize before normal operation commences.
• Low Power Consumption: With a low supply current of only 5.5µA, the MAX6420UK26+ is optimized for power-sensitive designs, contributing to overall energy efficiency.
• High Accuracy: The reset threshold accuracy is maintained at ±2.5% over the entire temperature range of -40°C to +125°C, ensuring reliable operation under varying conditions.

Applications

• Portable Devices
• Battery-Powered Equipment
• Embedded Systems
• Industrial Controllers
• Automotive Systems

The MAX6420UK26+ from Maxim Integrated is a testament to the company's commitment to providing advanced integrated circuits that enhance system reliability and performance. Its small footprint, combined with its robust feature set, makes it an excellent choice for designers looking to incorporate a dependable supervisory function into their products. Whether it's for safeguarding critical data during power fluctuations or ensuring consistent device operation, the MAX6420UK26+ stands as a crucial component in maintaining system integrity.