The MIC803-40D2VM3TR is a voltage supervisory circuit manufactured by Micrel (now Microchip Technology). It is designed to monitor the voltage level of a power supply and provide a reset signal to a microcontroller or other digital system when the voltage falls below a specified threshold. This ensures that the system operates correctly and prevents data corruption during brownout conditions.

Applications

• Microcontroller reset circuits
• Voltage monitoring in embedded systems
• Power supply monitoring
• Portable devices
• Industrial control systems

Features

• Precision voltage monitoring
• Active-low reset output
• Fixed threshold voltage
• Small package size
• Low quiescent current

Benefits

• Prevents system malfunctions due to low voltage
• Ensures reliable system operation
• Reduces the risk of data corruption
• Simplifies power supply monitoring
• Extends battery life in portable devices

Additional Details

The MIC803-40D2VM3TR has a threshold voltage of 4.0V. The active-low reset output remains asserted until the supply voltage rises above the threshold. The device’s low quiescent current makes it suitable for battery-powered applications. The small package size allows for easy integration into compact circuit designs. By providing a reliable reset signal, the MIC803-40D2VM3TR helps to prevent unpredictable system behavior and ensures proper system startup and operation.