Maxim Integrated MAX791CSE+ Voltage Monitor

The MAX791CSE+ from Maxim Integrated is a precision, low-power microprocessor (μP) supervisory circuit designed to monitor power supplies in μP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits.

Key Features

• Voltage Monitoring: This device keeps a vigilant watch on the system voltage, ensuring that the values remain within operational thresholds, which is crucial for maintaining system stability and integrity.
• Power Supply Margining: The MAX791CSE+ allows for power supply margining through its manual reset input, which is a valuable feature for testing system performance under various power conditions.
• Reset Timeout: It features an adjustable reset timeout period, which can be set by the user to ensure the system has adequate time to stabilize before the μP starts its operation.
• Low Power Consumption: With its focus on power efficiency, this supervisory circuit is ideal for battery-operated systems where power conservation is critical.
• Compact Form Factor: The device comes in a small 16-pin narrow SO package, making it suitable for space-constrained applications.

Applications

The MAX791CSE+ is versatile and can be used in a range of applications, including:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Industrial and Telecommunications Systems

Technical Specifications

With a precise factory-set voltage threshold and an active-low reset output, the MAX791CSE+ ensures that the μP resets cleanly during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V, and the device also features a debounced manual reset input. Furthermore, the MAX791CSE+ offers a watchdog timer for additional system protection.

For reliable system supervision with minimal design complexity, the Maxim Integrated MAX791CSE+ is an excellent choice for designers looking to enhance their system's performance and stability.