The MIC803-46D3VM3 is a voltage supervisor manufactured by Micrel (now Microchip Technology). It is designed to monitor the power supply voltage of microprocessors (µPs), microcontrollers (µCs), and digital signal processors (DSPs). It provides a reset signal when the supply voltage falls below a specified threshold, ensuring proper system operation and preventing data corruption.

Applications

• Microprocessor (µP) Systems
• Microcontroller (µC) Systems
• Digital Signal Processor (DSP) Systems
• Embedded Systems
• Power Supply Monitoring

Features

• Precision Voltage Monitoring: Accurately monitors the supply voltage.
• Fixed Reset Threshold: Provides a reset signal when the voltage drops below the specified threshold (4.63V in this case).
• Active-Low Reset Output: The reset output is low when the voltage is below the threshold.
• Open-Drain Output: Requires an external pull-up resistor.
• Small Package: Available in a small SOT-23 package.

Benefits

• System Reliability: Ensures reliable system operation by preventing incorrect code execution during power-up or brownout conditions.
• Data Protection: Protects against data corruption by resetting the system when the voltage is too low.
• Simple Implementation: Easy to use and requires minimal external components.
• Compact Size: The small SOT-23 package saves board space.
• Cost-Effective: Provides a cost-effective solution for voltage monitoring.

Technical Specifications

The MIC803-46D3VM3 has a fixed reset threshold voltage of 4.63V. It operates from a supply voltage of 1.6V to 5.5V. The reset timeout period is typically 140 ms. The reset output is active-low and open-drain. It comes in a SOT-23 package. The operating temperature range is -40°C to +85°C.