MICROCHIP TECH. part MIC803-30D4VC3-TR is a high-performance, ultra-low power microcontroller supervisory circuit with a watchdog timer. It is designed to monitor the supply voltage and reset the system in case of voltage fluctuations or power failures, ensuring reliable and stable operation of the microcontroller.This microchip features a wide operating voltage range of 2.7V to 5.5V, making it suitable for a variety of applications. It provides a fixed reset threshold of 3.08V, ensuring accurate monitoring of the supply voltage. The reset delay time can be adjusted to suit specific system requirements.The MIC803-30D4VC3-TR also includes a watchdog timer that helps to prevent system lock-up or glitches by resetting the microcontroller if it fails to toggle within the defined time period. This increases the overall system reliability and helps to avoid potential system failures.This microcontroller supervisory circuit comes in a compact and space-saving SOT-143-4 package, making it ideal for space-constrained applications. It operates over the extended temperature range of -40°C to +85°C, making it suitable for a wide range of industrial, automotive, and consumer electronic applications.MICROCHIP TECH. part MIC803-30D4VC3-TR is a reliable and efficient solution for system supervision and reset functionality, ensuring the smooth and seamless operation of microcontroller-based systems.