Maxim Integrated MAX6326XR29: Ultra-Low-Power SC70 Voltage Supervisor

The MAX6326XR29 from Maxim Integrated is a highly compact, ultra-low-power voltage supervisor designed to monitor power supplies in digital systems. It ensures reliable operation by providing a reset signal to microcontrollers and other digital devices during power-up, power-down, and brown-out conditions. The device is a perfect solution for portable equipment, where power conservation is critical.

With a preset reset threshold voltage of 2.93V, the MAX6326XR29 is tailored to manage 3V-powered circuits efficiently. It boasts a low supply current of only 1.2µA, which is particularly beneficial for battery-operated devices, as it helps extend battery life by consuming minimal power.

The device comes in a tiny SC70 package, making it an excellent choice for space-constrained applications. Despite its small size, it offers robust features such as a reset timeout period of 140ms, which ensures that the system has sufficient time to stabilize before normal operation resumes.

One of the key features of the MAX6326XR29 is its ability to provide a reset signal to the host system whenever the monitored voltage falls below the threshold. This signal remains asserted for the duration of the timeout period after the voltage rises above the threshold, guaranteeing a proper reset. Additionally, the device can tolerate over 20% over its power supply voltage, ensuring stability and reliability even under stress conditions.

For design flexibility, the MAX6326XR29 offers an open-drain reset output, which allows for the connection of multiple devices in a wired-OR configuration. This feature enables the creation of a comprehensive monitoring system for multiple voltage rails within a system.

In summary, the Maxim Integrated MAX6326XR29 is a high-precision, ultra-low-power voltage supervisor, ideal for managing power supplies in portable and space-sensitive applications. Its combination of low power consumption, small footprint, and robust protection features make it an essential component for ensuring the reliability and longevity of digital systems.