Maxim Integrated MAX6811SEUS+T Microprocessor (µP) Supervisory Circuit

The MAX6811SEUS+T from Maxim Integrated is a highly compact, single-supply, low-power voltage monitor designed to supervise microprocessor (µP) systems. This supervisory circuit is essential in ensuring reliable operation by monitoring the power supplies in digital systems, providing a reset signal to the host processor whenever the monitored power supply falls below a preset threshold.

Key Features

• Supply Voltage Range: The device operates over a wide supply voltage range of 1.2V to 5.5V, making it suitable for a variety of low-power and portable applications.
• Low Power Consumption: With a quiescent current of only 1µA, the MAX6811SEUS+T is optimized for battery-powered and energy-conscious designs.
• High Accuracy: The reset threshold voltage is factory-trimmed to high precision, ensuring reliable monitoring and system protection.
• Reset Timeout: The device features a 140ms minimum power-on reset timeout period, which provides a predictable delay before the system starts up.
• Manual Reset Input: An active-low manual reset input allows for an external trigger to initiate a system reset, providing additional system control.
• Compact Package: The MAX6811SEUS+T comes in a small SOT-143 package, which is ideal for space-constrained applications.
• Temperature Range: It operates over the extended temperature range of -40°C to +85°C, accommodating a broad spectrum of environmental conditions.

Applications

The MAX6811SEUS+T is a versatile device that can be used in a variety of applications where reliable system operation is critical. It is particularly well-suited for portable devices, handheld equipment, notebooks, and embedded systems. Whether it's to prevent firmware corruption by ensuring proper system startup or to handle low-battery conditions, this supervisory circuit is an invaluable component in maintaining system integrity.

Conclusion

Maxim Integrated's MAX6811SEUS+T is an essential building block for any microprocessor-based system that requires vigilant monitoring of its power supply. Its low power consumption, high accuracy, and small form factor make it an excellent choice for designers looking to enhance system reliability without compromising on space or power efficiency.