ON Semiconductor CAT706TVI-GT3 Supervisory Circuit

The CAT706TVI-GT3 from ON Semiconductor is a robust supervisory circuit designed to monitor power supply and system health in microprocessor-based systems. It provides a crucial layer of protection by ensuring that the system's power supply is stable before the microprocessor boots, and continuously checks for proper operation while the system is running.

This component operates by monitoring the voltage level of the power supply, and it can signal the microprocessor through a reset output whenever it detects that the voltage has fallen below a predefined threshold. This reset signal ensures that the system can return to a known, safe state, which is essential for preventing data corruption and ensuring the reliability of the system's operation.

The CAT706TVI-GT3 features a precision voltage monitor with a factory-trimmed threshold, offering tight accuracy for the reset function. It has a low supply current, making it an energy-efficient choice for battery-powered applications. Additionally, the device's active-low reset output is guaranteed to be in the correct state for VCC down to 1.0V, which provides additional security for low-voltage operations.

With its wide operating temperature range, the CAT706TVI-GT3 is suitable for use in various environments, ranging from industrial to automotive applications. The device comes in a small 5-pin TSOT-23 package, making it an ideal solution for space-constrained applications.

Key features of the CAT706TVI-GT3 include:

• Precision monitoring of 3V, 3.3V, and 5V supply voltages
• 140 ms minimum power-on reset pulse width
• Low supply current of 11 µA (typical)
• Debounced manual reset input
• Watchdog timer with 1.6-second timeout (typical)
• Temperature range from -40°C to +85°C
• TSOT-23 5-lead package

The CAT706TVI-GT3 supervisory circuit is an essential component for systems that require consistent operation and protection against the anomalies of power supply fluctuations. Its integration into a product design can help to enhance the overall stability and reliability of the system, making it a valuable addition to a variety of applications.