Maxim Integrated MAX6365LKA29 Microprocessor Supervisory Circuit

The Maxim Integrated MAX6365LKA29 is a high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with 2.93V-powered circuits.

This supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6365LKA29 asserts a reset signal whenever the VCC supply voltage falls below its reset threshold level. The reset output remains asserted for a reset timeout period after VCC rises above the reset threshold to ensure the system has stabilized before the processor begins to execute code.

Key features of the MAX6365LKA29 include:

• Factory-Trimmed Reset Threshold: The device comes with a precise factory-trimmed VCC reset threshold at 2.93V, suitable for systems that operate at 3V nominal power supply levels.
• Manual Reset Input: It includes a manual reset input that allows for a simple push-button interface to manually assert a system reset.
• Low Supply Current: With its low supply current of 1.5µA (typ), the MAX6365LKA29 is ideal for power-sensitive applications.
• Reset Timeout Period: The reset timeout period is 140ms (min), providing ample time for the system to stabilize after a reset.
• Immune to Short VCC Transients: The circuit is designed to ignore short-duration transients on the VCC line, preventing unnecessary resets due to noise and brief supply glitches.
• Compact SOT-23 Packaging: The component is available in a small SOT-23 package, making it an excellent choice for space-constrained applications.

The MAX6365LKA29 is suitable for a wide range of applications, including portable/battery-powered equipment, embedded controllers, industrial equipment, and any system where power supply stability is critical for proper operation. Its ease of integration and robust feature set make it a reliable choice for safeguarding system integrity in the event of power disturbances.

For further information and full specifications, designers and engineers should consult the datasheet provided by Maxim Integrated, ensuring the MAX6365LKA29 meets the specific requirements of their application.