Maxim Integrated MAX6376UR23+ Voltage Detector

The Maxim Integrated MAX6376UR23+ is a precision, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 1.8V to 5.0V. This voltage detector is ideal for portable and battery-powered equipment due to its low power consumption and small footprint.

The MAX6376UR23+ features a factory-trimmed reset threshold voltage of 2.32V, which makes it suitable for applications requiring a precise monitoring voltage around 2.3V. It asserts a reset signal whenever the VCC supply voltage falls below this preset threshold, ensuring the proper operation of the µP by resetting it before it can malfunction due to an out-of-tolerance power supply.

With its capability to hold the reset signal for a minimum of 140ms after VCC has risen above the reset threshold, the MAX6376UR23+ provides a predictable output delay that allows the power supply and µP to stabilize before the system resumes operation. This feature is critical in preventing system errors that can occur if the µP starts operating before power supply levels are stable.

The device comes in a compact SOT-23 package, making it an excellent choice for space-constrained applications. Its low supply current of only 5.5µA (typical) is particularly beneficial for battery-powered devices, as it helps to extend battery life. Additionally, the MAX6376UR23+ is designed to operate over a wide temperature range of -40°C to +125°C, ensuring reliable performance in a variety of operating environments.

For design flexibility, the MAX6376UR23+ also includes a manual reset input that allows the reset to be asserted at any time by an external signal. This feature is useful for initiating a system reset without relying on power supply conditions.

In summary, the Maxim Integrated MAX6376UR23+ voltage detector is a highly reliable and efficient solution for monitoring power supplies in digital systems, ensuring system stability and integrity through precise voltage detection and reset functionality.