ON Semiconductor CAT803TTBI-T3 Supervisory Circuit

The ON Semiconductor CAT803TTBI-T3 is a high-performance supervisory circuit designed to keep microprocessor systems safe by monitoring the power supply voltage. This component is crucial for applications that require a reliable operation and protection against unpredictable power conditions. It is widely used in microprocessor-based systems, including computers, controllers, and intelligent instruments, where it ensures that the system operates within safe voltage thresholds.

The CAT803TTBI-T3 offers a precise monitoring system with a 3.08V threshold voltage, making it suitable for systems that operate at 3.3V power supply levels. The device features an active low reset output, which ensures that the connected microprocessor or system is held in a reset state whenever the monitored supply voltage drops below the threshold. This reset signal is maintained for a minimum of 140ms after the supply voltage has risen above the reset threshold, providing a proper power-up reset.

One of the key features of this supervisory circuit is its low power consumption. With a quiescent current of typically 5µA, it is an excellent choice for power-sensitive applications. This low power draw helps to extend the battery life of portable devices, making the CAT803TTBI-T3 an energy-efficient solution for modern electronic products.

The device is offered in a small SOT-23 package, which is ideal for space-constrained applications. It is designed to operate over a wide temperature range of -40°C to +85°C, ensuring reliable performance even under harsh environmental conditions. Additionally, the CAT803TTBI-T3 supervisory circuit is characterized for operation from 1.0V to 10V, providing flexibility in various application voltages.

With its tight voltage threshold accuracy and low power consumption, the ON Semiconductor CAT803TTBI-T3 is a robust solution for system voltage monitoring. It provides essential protection for microprocessor systems, ensuring that they operate safely and effectively, thereby reducing the risk of data corruption, system failures, and hardware damage due to power supply issues.