Maxim Integrated MAX6866UK43D3S+ Microprocessor Reset Circuit

The Maxim Integrated MAX6866UK43D3S+ is a highly reliable, low-power 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 4.3V power supply voltage.

This compact device is housed in a space-saving 5-pin SOT23 package, making it ideal for portable and space-constrained applications. The MAX6866UK43D3S+ is specifically designed to maintain system integrity by monitoring the power supply voltage and issuing a reset signal to the connected microprocessor in the event of an undervoltage condition.

Key Features:

• Voltage Monitoring: The device monitors a 4.3V power supply, ensuring that the connected microprocessor operates within the acceptable voltage range.
• Manual Reset Input: A manual reset input allows the user to initiate a system reset, providing additional system control and debugging capabilities.
• Reset Timeout: The MAX6866UK43D3S+ features a fixed reset timeout period of 140ms (min), ensuring that the system has sufficient time to stabilize after a reset event.
• Low Power Consumption: With its ultra-low supply current of 1.6µA (typ), it is optimized for battery-powered and energy-efficient applications.
• High Accuracy: The reset threshold accuracy is ±2.5%, which contributes to the reliable operation of the system under various conditions.
• Operating Temperature Range: The device is specified for the extended -40°C to +85°C temperature range, accommodating a wide range of environmental conditions.

Applications:

• Portable Devices
• Embedded Systems
• Microprocessor/Microcontroller Systems
• Data Storage Equipment
• Medical Devices
• Industrial Control Systems

The MAX6866UK43D3S+ from Maxim Integrated is an essential component for systems requiring robust power supply monitoring and reliable reset functionality. Its precision voltage monitoring and reset capabilities make it a trusted solution for designers looking to enhance system stability and performance.