The MIC2774L-25YM5 is a low-current voltage supervisor manufactured by Micrel (now Microchip Technology). It's designed to monitor voltage levels in electronic circuits 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 starts up correctly and operates reliably, preventing data corruption or erratic behavior.

Applications

• Microprocessor/Microcontroller Systems: Used to monitor the supply voltage and reset the processor if it drops below the safe operating level.
• Battery-Powered Devices: Monitors battery voltage to prevent deep discharge and ensure proper operation as the battery depletes.
• Power Supplies: Ensures that the output voltage of a power supply is within the specified limits and provides a reset signal if it deviates.
• Automotive Electronics: Monitors critical voltage rails in automotive systems to ensure reliable operation of electronic control units (ECUs).
• Industrial Control Systems: Protects sensitive electronic components from voltage fluctuations and power outages.

Features

• Precision Voltage Monitoring: Accurately monitors the input voltage with a typical threshold accuracy.
• Low Supply Current: Consumes minimal current, making it suitable for battery-powered applications.
• Open-Drain Reset Output: The reset output is an open-drain NMOS transistor, which allows for flexible connection to various microcontrollers.
• Active-Low Reset: The reset output is active low, meaning it asserts low when the voltage drops below the threshold.
• Small Package: Available in a compact package, saving valuable board space.

Benefits

• Improved System Reliability: Prevents system malfunctions and data corruption caused by voltage drops.
• Extended Battery Life: Low current consumption minimizes battery drain in portable devices.
• Simplified System Design: Integrated voltage monitoring and reset functionality reduces the need for external components.
• Protection against Voltage Fluctuations: Protects sensitive electronic components from damage caused by voltage spikes and dips.
• Ensured Proper System Startup: Guarantees that the system starts up correctly after a power outage or voltage drop.

Additional Details

The MIC2774L-25YM5 has a fixed threshold voltage of 2.5V. The reset output remains asserted for a specified reset timeout period after the voltage rises above the threshold, ensuring that the microcontroller has sufficient time to initialize. The device operates over a wide temperature range, making it suitable for various environments. Supply voltage is typically 1.6V to 5.5V. Consult the datasheet for complete electrical characteristics and application information.