Maxim Integrated MAX6392KA31 Microprocessor Reset Circuit

The MAX6392KA31 is a highly reliable, low-power microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 3.1V power supply voltage.

This device is engineered to assert a reset signal whenever the VCC supply voltage declines below a preset threshold, ensuring that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing the system with a stable interval to recover from a low voltage condition.

The MAX6392KA31 features an active-low RESET output, which is guaranteed to be in the correct state for VCC down to 1V. The reset threshold is factory-trimmed to 3.08V, which makes it suitable for systems operating around a 3.1V supply. The device's low supply current of 1.5µA (typical) makes it an ideal choice for use in portable equipment where power conservation is critical.

Additionally, the MAX6392KA31 comes in a compact SOT-23 package, making it suitable for space-constrained applications. The device has a wide operating temperature range, making it reliable across various environmental conditions. Its applications include portable/battery-powered equipment, embedded controllers, computers, and other microprocessor systems where accurate monitoring of the power supply is necessary to protect the system integrity.

Maxim Integrated's commitment to quality and reliability ensures that the MAX6392KA31 provides a robust power monitoring solution for designers looking to enhance system stability and extend product life.