Maxim Integrated MAX6328UR23+G65 Microprocessor Supervisory Circuit

The MAX6328UR23+G65 from Maxim Integrated is a highly precise, low-power 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 with a 2.3V power supply voltage.

This supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brownout conditions. The reset output remains asserted for a minimum of 140ms after VCC has risen above the reset voltage threshold, providing ample time for the system to stabilize before the processor starts running.

The MAX6328UR23+G65 features a highly accurate voltage threshold of 2.3V, making it suitable for monitoring 2.3V power supplies and ensuring the correct operation of the system. It boasts a low supply current of only 1µA (typical), which is ideal for portable and battery-powered applications where power conservation is critical.

This device is available in a compact SOT23-3 package, providing a space-saving solution for modern compact electronic assemblies. The MAX6328 series offers several fixed voltage options to cater to different application requirements, and the MAX6328UR23+G65 variant specifically monitors a 2.3V supply voltage.

Key features of the MAX6328UR23+G65 include:

• High precision monitoring of 2.3V power supplies
• Low power consumption with 1µA supply current
• Guaranteed reset valid to VCC = 1V
• Power supply transient immunity
• No external components required
• Compact SOT23-3 package

Applications for this supervisory circuit include portable and battery-powered equipment, computers, controllers, intelligent instruments, critical µP and µC power monitoring, and other systems that require a precise and reliable reset facility. The MAX6328UR23+G65 is an ideal choice for designers looking for a simple, low-cost, and efficient solution to enhance the reliability of their power supply monitoring systems.

Maxim Integrated's commitment to quality ensures that the MAX6328UR23+G65 supervisory circuit meets the stringent requirements of modern electronic systems, providing a robust and reliable solution for managing µP resets and power monitoring tasks.