The MIC803-31D2VC3 is a precision voltage supervisor manufactured by Micrel (now Microchip Technology). It is designed to monitor voltage levels in electronic systems and provide a reset signal when the voltage falls below a specified threshold, ensuring proper system operation and preventing data corruption.

Applications:

• Microprocessor/Microcontroller Systems: Provides reset signal to microprocessors and microcontrollers during power-up or voltage drops.
• Memory Protection: Protects memory contents from corruption during power failures or brownouts.
• Real-Time Clocks (RTC): Monitors the power supply to RTCs to ensure accurate timekeeping.
• Power Supply Monitoring: Monitors the output voltage of power supplies to detect faults or failures.
• Battery-Powered Devices: Manages power sequencing and ensures safe operation in battery-powered systems.

Features:

• Precision Voltage Monitoring: Monitors voltage levels with high accuracy.
• Fixed Threshold Voltage: Predefined threshold voltage (3.08V) for voltage monitoring.
• Active-Low Reset Output: Provides an active-low reset signal when the voltage falls below the threshold.
• Open-Drain Output: Flexible output configuration for different system requirements.
• Small Package: Available in small SOT-23 package for space-constrained applications.
• Low Supply Current: Minimal power consumption for efficient operation.

Benefits:

• System Reliability: Prevents system malfunctions due to voltage drops or power failures.
• Data Protection: Protects data from corruption during power outages.
• Simplified Design: Integrated functionality reduces the need for external components.
• Compact Footprint: Small package size allows for use in miniaturized devices.

Additional Details:

The MIC803-31D2VC3 operates from a wide supply voltage range. It features a typical reset timeout delay, ensuring that the system has sufficient time to stabilize after a reset event. The device provides excellent noise immunity, preventing false resets due to transient voltage spikes. The operating temperature range is typically -40°C to +85°C. The open-drain output requires a pull-up resistor to the positive supply voltage. It is compliant with RoHS standards.