ON Semiconductor CAT1023WI-28-GT3 Supervisory Circuit

The ON Semiconductor CAT1023WI-28-GT3 is a highly reliable, precision supervisory circuit designed to maintain system integrity through monitoring power supply and battery functions in digital systems. This component is particularly well-suited for microprocessor-based applications where precise power management is critical.

This supervisory circuit features a combination of voltage monitoring, watchdog, and manual reset inputs, providing a comprehensive solution for system control and protection. The CAT1023WI-28-GT3 is designed to assert a reset signal whenever the VCC supply voltage falls below the factory-programmed threshold of 2.8 volts, ensuring that the system has a stable and reliable power-up reset.

The onboard watchdog timer serves as an independent system monitor, which prevents system failure by initiating a system reset in case of software or hardware malfunction. The manual reset function allows for an external trigger to reset the system, providing an additional layer of control for the user.

Key features of the CAT1023WI-28-GT3 include:

• Precision Monitoring: Factory-programmed threshold voltage for accurate monitoring.
• Low Power Consumption: Ideal for battery-powered applications, this device has a low quiescent current.
• Watchdog Timer: A versatile watchdog timer with a selectable timeout period enhances system reliability.
• Manual Reset Input: Provides the ability to initiate a system reset externally.
• Compact Package: Available in a space-saving SOT-23 package, making it suitable for high-density PCB layouts.

The CAT1023WI-28-GT3 is designed for use in a wide array of applications, including computers, controllers, intelligent instruments, and portable electronics, where maintaining proper operation through voltage variations is crucial. With its robust feature set and ON Semiconductor's reputation for quality, this supervisory circuit is an excellent choice for ensuring system stability and reliability.

For design flexibility, the CAT1023WI-28-GT3 is also available in multiple voltage options to accommodate different system requirements. Its operating temperature range, from -40°C to +85°C, ensures functionality across a broad spectrum of environmental conditions, making it a versatile component for diverse applications.