The Maxim Integrated MAX6823SUK is a compact, highly precise 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 used in systems with a single 3.3V power supply.
This supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6823SUK features an active-low reset signal, with a factory-trimmed reset threshold voltage suitable for operation with a variety of microprocessors, microcontrollers, and other logic systems.
The reset output remains asserted for a minimum timeout period after V<sub>CC has risen above the reset threshold level, ensuring the system has sufficient time to stabilize before the processor begins operation. This timeout period is typically 140ms, which allows the power supply and processor to stabilize before the reset is deasserted.
The MAX6823SUK comes in a compact SOT-23 package, making it an ideal choice for space-constrained applications. Its low supply current of 5µA (typ) is beneficial for portable and battery-powered equipment. The device operates over a wide temperature range of -40°C to +85°C, catering to diverse environmental conditions.
The device's features include a debounced manual reset input, allowing for a simple and effective way to manually reset the system if necessary. Additionally, the MAX6823SUK offers an active-low reset output, which is guaranteed to be in the correct state for V<sub>CC down to 1V, ensuring reliable system reset even during low voltage conditions.
In summary, the Maxim Integrated MAX6823SUK is a robust and reliable solution for system reset management, providing a safeguard for digital systems against unpredictable power supply conditions and manual reset capability, all within a small footprint and with minimal power consumption.
