Maxim Integrated MAX6357LSUT+T Microprocessor Supervisory Circuit

The MAX6357LSUT+T from Maxim Integrated is a high-quality microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems that require voltage monitoring.

This supervisory circuit is particularly suitable for portable and battery-powered applications due to its low power consumption and small footprint. The MAX6357LSUT+T is available in a compact 6-pin SOT-23 package, making it ideal for space-constrained applications.

One of the key features of the MAX6357LSUT+T is its ability to assert a reset signal whenever the V<sub>CC supply voltage falls below a preset threshold, ensuring that the µP starts up in a known state. The reset output remains asserted for a preset timeout period after V<sub>CC has risen above the reset threshold, providing a guaranteed reset duration and allowing the power supply and µP to stabilize.

The device offers factory-set reset thresholds suitable for operation with a variety of supply voltages, and its reset timeout period can also be factory set according to application needs, simplifying the design process. Furthermore, the MAX6357LSUT+T features a manual reset input, which provides a hardware override of the reset output, allowing for a system reset on demand.

Key specifications of the MAX6357LSUT+T include:

• Precision monitoring of 3V, 3.3V, and 5V power-supply voltages.
• Low supply current of 1.2µA makes it ideal for battery-operated systems.
• Factory-set reset threshold voltages for broad application compatibility.
• Factory-set reset timeout periods to suit various system requirements.
• Manual reset capability for additional system control.
• Immune to short V<sub>CC transients.

The MAX6357LSUT+T is a reliable solution for system designers looking to enhance the operational stability of their digital systems. It ensures that all the connected components, especially microprocessors, are protected from unpredictable behavior due to power supply inconsistencies.