Maxim Integrated MXD1817UR31-T MicroMonitor Chip

The MXD1817UR31-T from Maxim Integrated is a highly reliable, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with 3.3V-powered circuits.

This compact supervisory chip comes in a 3-Pin SOT-323 package, which is ideal for space-constrained applications. It offers key features such as a precision voltage monitor, a manual reset capability, and a reset timeout delay, which makes it perfect for managing microprocessor systems.

Key Features:

• Precision Monitoring: The MXD1817UR31-T has a factory-trimmed reset threshold suitable for monitoring 3.1V power supplies, ensuring that the system operates within safe voltage levels.
• Manual Reset Input: A manual reset input is provided, allowing for a system reset to be initiated by external hardware or software, giving additional control to the system operator or maintenance personnel.
• Reset Timeout: After the power supply voltage returns to an acceptable level, the reset signal is kept active for a preset timeout period, ensuring the µP and system have adequate time to initialize and stabilize.
• Low Power Consumption: The device is optimized for low power consumption, making it suitable for battery-powered and portable applications where power efficiency is critical.
• Temperature Range: It operates over a wide temperature range, from -40°C to +125°C, allowing for deployment in environments with varying temperature conditions.

The MXD1817UR31-T is designed to prevent system errors during power-up, power-down, or brown-out conditions. Its reset output remains operational with V_CC as low as 1.2V, ensuring that the reset signal is available even during low voltage conditions. This feature is crucial for applications that require a robust and reliable operation under all circumstances.

With its combination of features, the MXD1817UR31-T is an excellent choice for managing power and processor functions in complex systems, including portable devices, computers, controllers, and intelligent instruments. Its small footprint and ease of integration make it a popular choice among engineers and designers looking to enhance system reliability and performance.