Maxim Integrated MAX6801UR44D3 Microprocessor Reset Circuit

The MAX6801UR44D3 from Maxim Integrated is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 4.4V power supply voltage.

This supervisory circuit is ideal for portable and battery-powered equipment due to its low power consumption. The MAX6801UR44D3 ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The reset output remains operational with VCC as low as 1V, and the device consumes only 1.2µA of supply current, making it suitable for energy-critical applications.

The MAX6801 comes in a tiny SOT23-3 package, making it perfect for space-constrained applications. It features a factory-trimmed reset threshold of 4.4V, which is specifically designed to provide a precise voltage monitoring solution. The reset output is active low and is guaranteed to be in the correct state for VCC down to 1V. Additionally, the reset timeout period is 140ms (min), providing a reliable time delay for system stabilization.

Key features of the MAX6801UR44D3 include:

• Precision Monitoring of 4.4V Power-Supply Voltages
• Fully Specified Over Temperature
• 140ms (min) Reset Timeout Period
• Low Power Consumption (1.2µA at 25°C)
• Guaranteed RESET Valid to VCC = 1.0V
• Compact SOT23-3 Package

With its combination of low power consumption, small footprint, and precision voltage monitoring, the MAX6801UR44D3 is an excellent choice for managing power supply conditions in a wide range of microprocessor-based systems. Whether you are designing portable devices, computers, controllers, or other digital hardware, this reset circuit from Maxim Integrated provides a reliable solution for enhancing system stability and performance.

By integrating the MAX6801UR44D3 into your design, you can ensure that your system maintains its integrity through various power supply conditions, thereby improving overall product reliability and user experience.