Maxim Integrated MAX6827YUT+T Microprocessor Supervisory Circuit

The MAX6827YUT+T from Maxim Integrated is a compact, high-precision 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 ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6827YUT+T operates by monitoring the VCC line for under-voltage conditions. When VCC falls below the reset voltage threshold, the reset output is asserted (driven low) to reset the connected µP. The reset output remains asserted for a preset timeout period after VCC rises above the reset threshold, ensuring the system has stabilized before the µP begins operation.

Key features of the MAX6827YUT+T include:

• A precise factory-set reset threshold voltage that ensures accurate monitoring without the need for external resistors.
• A low supply current of 5.5µA (typical), which is ideal for portable battery-operated applications.
• An operating temperature range of -40°C to +85°C, accommodating a wide range of environmental conditions.
• Immunity to short VCC transients, enhancing system reliability.
• Available in a tiny SOT23-6 package, making it suitable for space-constrained applications.

With its built-in glitch immunity, the MAX6827YUT+T is capable of ignoring voltage transients on VCC, a feature that prevents false resets from being triggered. Additionally, the device is designed to have a low minimum VCC operating voltage of 1.2V, which supports low-voltage applications.

The MAX6827YUT+T is a versatile component that can be utilized in various applications requiring voltage monitoring and system reliability, such as computers, controllers, intelligent instruments, portable/battery-powered equipment, and embedded systems. Its robust design and ease of integration make it an ideal choice for designers looking to enhance system stability and extend product life.

For further information and full technical specifications, designers and engineers can refer to the datasheet provided by Maxim Integrated. The MAX6827YUT+T is an essential component for maintaining the integrity and smooth operation of microprocessor-based systems.