Maxim Integrated MAX6389LT28D2+T Voltage Supervisor IC

The MAX6389LT28D2+T from Maxim Integrated is a high-precision, low-power voltage supervisor designed to monitor single power-supply voltages. This tiny device is critical for systems that require a stable and reliable power source, as it ensures that the system operates within its specified voltage range. The MAX6389LT28D2+T is an ideal solution for portable battery-powered equipment, microprocessor and microcontroller-based systems, and other applications where voltage monitoring is essential for the integrity of the system.

One of the key features of the MAX6389LT28D2+T is its factory-set reset threshold voltage of 2.8V, which provides a precise monitoring capability for systems operating around this voltage level. The device's reset output is asserted when the monitored voltage falls below the reset threshold, and it remains asserted until the voltage rises above the factory-set threshold, plus a minimum hysteresis. This ensures that the system has a stable power supply before resuming operation, thereby preventing potential malfunctions due to insufficient voltage.

The MAX6389LT28D2+T comes in a compact, 6-pin SOT-23 package, making it suitable for space-constrained applications. It is also characterized for operation over a wide temperature range of -40°C to +125°C, which allows it to be used in environments with extreme temperature variations. The device features a low supply current of 1.5µA (typical), which is beneficial for battery-powered applications where power conservation is a priority.

Other notable features of the MAX6389LT28D2+T include its debounce capability, which filters out brief voltage dips to avoid false triggering, and its ability to provide an active-low reset signal. The device is also available in a variety of reset threshold voltages, accommodating a range of power supply specifications.

Overall, the MAX6389LT28D2+T is a reliable and efficient solution for voltage monitoring, providing system designers with a simple and effective way to enhance the stability and safety of their electronic products.