Maxim Integrated MAX6444US46L+T Microprocessor Supervisory Circuits

The MAX6444US46L+T from Maxim Integrated is a high-quality microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications. This component ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions.

The device features a low supply current, making it an ideal choice for use in portable equipment where extending battery life is crucial. With a factory-trimmed reset threshold voltage for 4.6V systems, the MAX6444US46L+T offers precision monitoring without external components, thus simplifying the design and reducing the overall bill of materials.

One of the key features of this supervisory circuit is its ability to assert a reset signal whenever the VCC supply voltage falls below the reset threshold. The reset output remains asserted for a reset timeout period after VCC rises above the reset threshold, ensuring the system microprocessor has ample time to initialize and stabilize. The reset timeout period is typically 140ms, which can help prevent system errors during transient conditions.

The MAX6444US46L+T is available in a compact, 4-pin SOT143 package, which is suitable for space-constrained applications. The device operates over a wide temperature range of -40°C to +125°C, accommodating diverse operating environments.

With its built-in features, the MAX6444US46L+T is an excellent choice for managing power supply conditions in a variety of systems, including computers, controllers, intelligent instruments, and portable consumer electronics. By providing a reliable reset output, it helps protect the integrity of the system's software and hardware during abnormal supply conditions, thus enhancing the overall system stability and performance.

Overall, the Maxim Integrated MAX6444US46L+T is a robust and reliable solution for µP supervisory needs, offering both high precision and low power consumption in a small package, making it a valuable component in any power-sensitive application.