Maxim Integrated MAX6419UK29+T Microprocessor Reset Circuit

The Maxim Integrated MAX6419UK29+T is a compact, 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 in systems with a 2.9V power supply voltage. This makes it an ideal choice for portable and battery-operated electronics where space is at a premium and energy efficiency is crucial.

This tiny device is offered in a space-saving 5-pin SOT23 package, making it an excellent fit for space-constrained applications. The MAX6419UK29+T is capable of providing a precision monitoring solution, with a factory-set reset threshold voltage of 2.925V that ensures that the µP resets reliably and operates correctly during power-up, power-down, or brown-out conditions.

One of the key features of the MAX6419UK29+T is its low supply current of only 1.2µA, which helps to extend battery life in portable applications. The device also includes a manual reset input that allows for a reset to be triggered with an external switch or another signal, providing additional system control flexibility.

The reset output of the MAX6419UK29+T is active-low and is guaranteed to be in the correct state for VCC down to 1V. This ensures that the µP is held in a reset state until the system voltage has stabilized at the correct operating level. Furthermore, the reset output remains asserted for a minimum of 140ms after VCC rises above the reset threshold, providing ample time for the system to stabilize before the µP begins operation.

Designed with robustness in mind, the Maxim Integrated MAX6419UK29+T includes integrated overtemperature protection and is specified over the extended -40°C to +125°C temperature range. This makes it suitable for use in harsh environments and demanding applications across various sectors, including consumer electronics, embedded systems, and industrial controls.

In summary, the MAX6419UK29+T from Maxim Integrated is a reliable and efficient solution for µP system monitoring, offering low power consumption, high precision, and ease of integration in a miniature package.