Product Overview: NXP MAX809LD

The NXP MAX809LD is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant degree of reliability and precision which is essential for maintaining the integrity of the system's operation. This supervisory circuit is particularly well-suited for portable, battery-operated applications due to its low power consumption and small footprint.

Key Features

• Voltage Monitoring: The MAX809LD offers precise monitoring of the 3-pin voltage levels, ensuring that the system is reset to a known state after a brownout or power-on event. This helps in preventing erroneous operation due to low voltage conditions.
• Reset Output: The device generates a reset signal whenever the monitored voltage drops below the factory-programmed threshold. The reset output remains active for a minimum of 140ms after the voltage exceeds the reset threshold, providing ample time for the system to stabilize.
• Low Power Consumption: With its low power consumption, the MAX809LD is ideal for power-sensitive applications, ensuring minimal impact on the overall energy budget of the system.
• Temperature Range: The device operates over a wide temperature range, making it suitable for various environments and applications.
• Small Size: The SOT-23 package is space-efficient, making it an excellent choice for applications where PCB real estate is at a premium.

Applications

The MAX809LD is versatile and can be used in a variety of applications, including:

• Computers and Controllers
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Embedded Systems

Conclusion

The NXP MAX809LD is a reliable solution for system monitoring, providing essential protection against power supply anomalies. Its low power consumption, precise voltage monitoring, and compact form factor make it an excellent choice for designers looking to enhance system stability and performance in space-constrained and power-sensitive applications.