The MIC803-44D4VC3 is a voltage supervisor manufactured by Micrel, which is now part of Microchip Technology. This device is designed to monitor the voltage level of a power supply and provide a reset signal to a microcontroller or other digital circuit if the voltage falls below a certain threshold. This ensures that the system starts up and operates correctly, preventing data corruption and other issues caused by undervoltage conditions. The '44D4VC3' designation indicates specific characteristics such as the voltage threshold and output type.

Applications:

• Microcontroller-based systems
• Embedded systems
• Power supply monitoring
• Battery-powered devices
• Industrial control systems
• Automotive electronics

Features:

• Precise voltage monitoring
• Factory-trimmed reset threshold
• Open-drain or push-pull reset output
• Active-low reset output
• Small package size
• Low power consumption

Benefits:

• Reliable system reset during undervoltage conditions
• Prevents data corruption
• Ensures proper system startup
• Simplified design with integrated functionality
• Reduced component count
• Compact solution for space-constrained applications

Additional Details:

The MIC803-44D4VC3 monitors the input voltage and compares it to a pre-set threshold. If the voltage drops below this threshold, the reset output is asserted (pulled low). The reset output remains asserted until the voltage rises above the threshold and a certain hysteresis level is reached. The reset output type can be either open-drain or push-pull, depending on the specific application requirements. An active-low reset output is typically used to reset microcontrollers and other digital circuits. The small package size of the MIC803-44D4VC3 makes it suitable for use in space-constrained applications. Low power consumption is important for battery-powered devices, as it extends battery life. The precise voltage monitoring and reliable reset functionality of the MIC803-44D4VC3 ensure proper system operation and prevent data corruption. Micrel provides detailed technical documentation and application notes to assist designers in using the MIC803-44D4VC3 in their systems. This voltage supervisor is a cost-effective and reliable solution for protecting sensitive electronic circuits from undervoltage conditions.

The specific threshold voltage for the MIC803-44D4VC3 can be found in the device datasheet.