Maxim Integrated MAX6721AUTTGD3+T Supervisory Circuit

The MAX6721AUTTGD3+T from Maxim Integrated is a highly reliable supervisory circuit designed to monitor power supplies in microprocessor and digital systems. This component provides a precise, low-power solution for system monitoring, ensuring that the system operates within safe voltage levels. It is an ideal choice for portable devices, computers, controllers, and intelligent instruments that require stringent voltage regulation and monitoring.

With a compact SOT23 package, the MAX6721AUTTGD3+T offers a space-saving design, making it suitable for space-constrained applications. It features a factory-trimmed reset threshold voltage, which allows the device to monitor the voltage level of the power supply and assert a reset signal if it detects an out-of-tolerance condition. This reset signal ensures that the microprocessor reboots cleanly in the event of a power failure or brownout condition.

The device boasts an impressive low supply current of just 1.1µA, which is particularly beneficial for battery-operated devices where power efficiency is critical. Additionally, the supervisory circuit has a wide operating voltage range from 1.1V to 5.5V, making it versatile for different types of systems and power requirements.

One of the key features of the MAX6721AUTTGD3+T is its ±1.5% reset threshold accuracy over the entire temperature range of -40°C to +125°C. This precision ensures that the device performs reliably under various environmental conditions. The supervisory circuit also includes a manual reset input, which provides an external override capability, enabling a manual system reset whenever required.

The MAX6721AUTTGD3+T comes with multiple other features like a debounce input, which filters out unwanted noise on the manual reset signal, and an active-low reset output, which remains asserted for a minimum of 140ms after the monitored voltage returns to an acceptable level, ensuring a proper system reset.

Overall, the Maxim Integrated MAX6721AUTTGD3+T supervisory circuit is a robust and efficient solution for system voltage monitoring and management, offering enhanced system reliability and performance in a variety of applications.