The MAX825M from Maxim Integrated is a compact, highly efficient supervisory circuit designed to monitor power supplies in microprocessor systems. It provides a significant layer of protection by ensuring that the microprocessor always starts up in a known state. This supervisory circuit is particularly useful in managing system resets, ensuring that the microprocessor resets cleanly during power-up, power-down, and brownout conditions.

Key Features

• Precision Monitoring: The MAX825M offers precision monitoring of 3V, 3.3V, and 5V power-supply voltages, making it versatile for various applications.
• Manual Reset Input: A manual reset input is provided, allowing for a system reset to be triggered with an external button or logic signal.
• Low Power Consumption: This device is designed for low power consumption, making it ideal for battery-operated systems.
• Reset Timeout: It features an adjustable reset timeout period, which can be set by external capacitors.
• Watchdog Timer: An onboard watchdog timer helps to ensure that systems remain responsive and do not hang indefinitely.
• Compact Packaging: The MAX825M comes in a small SOT-23 package, which is beneficial for space-constrained applications.

Applications

The MAX825M is suitable for a wide range of applications, including:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Industrial Systems

Technical Specifications

The device operates over a wide temperature range and has the following technical specifications:

• Supply Voltage Range: 1.0V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Reset Voltage Threshold Options: Factory-set for 3V, 3.3V, or 5V systems
• Package Type: SOT-23

In conclusion, the MAX825M supervisory circuit from Maxim Integrated is a reliable and versatile solution for system monitoring and reset management. Its low power consumption and compact form factor make it an excellent choice for a variety of electronic applications.