Maxim Integrated MAX6361LUT29 Microprocessor Supervisory Circuit

The MAX6361LUT29 from Maxim Integrated is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant line of defense against system failures caused by erratic power supply voltages. This device is particularly suitable for battery-powered electronics where low power consumption and small size are critical.

The MAX6361LUT29 offers a precise factory-set reset threshold voltage of 2.93V, which helps to ensure that the µP resets reliably and operates correctly during power-up, power-down, and brown-out conditions. Once the supply voltage falls below this threshold, the reset output remains asserted for a minimum reset timeout period of 140ms after V_CC has risen above the reset threshold, providing ample time for the system to stabilize.

One of the key features of this supervisory circuit is its low supply current of only 1.5µA, which makes it an energy-efficient choice for portable applications. The device operates over a wide supply voltage range of 1V to 5.5V, allowing it to support a variety of digital systems with different power requirements.

The MAX6361LUT29 comes in a tiny 6-pin SOT23 package, making it easy to incorporate into space-constrained designs without sacrificing performance. Its small footprint is ideal for applications such as handheld devices, laptops, and other portable electronics where board space is at a premium.

Additional features include a debounced manual reset input which allows for a manual system reset, and an active-low, open-drain reset output that can interface directly with most microprocessor reset inputs. The device's robust design ensures that it is resistant to short V_CC transients, making it a reliable choice for systems that may be exposed to harsh conditions.

Overall, the Maxim Integrated MAX6361LUT29 supervisory circuit is an essential component for designers looking to enhance system reliability and maintain proper operation through voltage monitoring and reset management.