The CAT872-50ULGT3 from ON Semiconductor is a highly precise voltage supervisor IC designed to ensure the reliability and proper operation of microprocessor (µP) systems. As a crucial component for monitoring the power supply, this device provides a safeguard against undesired system resets and failures due to fluctuations and dips in the power supply voltage.

Key Features

• Voltage Threshold: The CAT872-50ULGT3 has a preset threshold voltage of 5.0V, making it suitable for systems that operate around this voltage level.
• Low Power Consumption: It is optimized for low power consumption, which is critical for battery-operated devices, ensuring minimal impact on the overall system power budget.
• Reset Timeout: The device features a 140 ms minimum reset timeout delay, providing ample time for the system to stabilize upon power-up or during voltage transients.
• Manual Reset: An additional manual reset input allows for a system reset to be triggered externally, offering flexibility for system maintenance or emergency resets.
• Output Type: The open-drain output of the reset signal ensures compatibility with different logic levels and allows for wired-OR connections.
• Temperature Range: Operating over an industrial temperature range from -40°C to +85°C, the CAT872-50ULGT3 can be deployed in a variety of harsh environments.
• Packaging: The device comes in a space-saving SOT-23 package, making it ideal for space-constrained applications.

Applications

The CAT872-50ULGT3 is versatile and can be used in a wide array of applications where voltage monitoring is critical. These include:

• Computers and computer peripherals
• Embedded systems
• Portable and battery-powered equipment
• Industrial controllers
• Automotive systems

Conclusion

ON Semiconductor's CAT872-50ULGT3 voltage supervisor IC is a robust solution for monitoring power supply voltages in microprocessor systems. With its precise voltage threshold, low power consumption, and additional features like manual reset input and open-drain output, it is an excellent choice for ensuring system stability and reliability across a variety of applications.