The R3112N251C-TR-F is a voltage detector IC manufactured by Ricoh. 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 when the voltage drops below a specified threshold. This ensures proper system operation and prevents data corruption or malfunctions caused by voltage fluctuations.

Applications

• Microcontroller Reset Circuits: Provides a reliable reset signal to microcontrollers during power-up, power-down, or brown-out conditions.
• Power Supply Monitoring: Monitors the output voltage of power supplies and generates an alarm or shutdown signal if the voltage falls outside the acceptable range.
• Battery-Powered Devices: Protects battery-operated devices from deep discharge by detecting low battery voltage and initiating a shutdown sequence.
• Industrial Control Systems: Ensures the stable operation of industrial equipment by monitoring voltage levels and preventing malfunctions due to voltage drops.
• Automotive Electronics: Monitors voltage levels in automotive systems to ensure the proper functioning of electronic components.

Features

• High-Accuracy Voltage Detection: Precisely monitors voltage levels to ensure accurate reset triggering.
• Built-in Delay Circuit: Incorporates a delay circuit to prevent false resets caused by transient voltage dips.
• Low Current Consumption: Minimizes power consumption, making it suitable for battery-powered applications.
• Small Package Size: Available in compact packages for space-constrained applications.
• Tape and Reel Packaging (TR): Supplied in tape and reel packaging for automated assembly processes.

Benefits

• Improved System Stability: Prevents system crashes and malfunctions caused by voltage drops.
• Reliable Reset Function: Ensures a proper reset of the microcontroller during power-up or brown-out conditions.
• Extended Battery Life: Reduces power consumption in battery-powered devices, extending their operating time.
• Simplified Circuit Design: The integrated delay circuit reduces the need for external components, simplifying circuit design and saving space.
• Automated Assembly: Tape and reel packaging facilitates automated assembly, reducing manufacturing costs.

The R3112N251C-TR-F voltage detector has a detection voltage of 2.5V. The built-in delay circuit prevents spurious resets by ensuring the voltage has been stable for a period before the reset signal de-asserts. The device's low current consumption is essential for battery-powered applications where minimizing power usage is paramount. The "TR" suffix indicates that the device is supplied in tape and reel packaging suitable for automated assembly processes. The “-F” likely denotes a specific feature or variant, perhaps related to the delay time or tolerance.

By providing a reliable and accurate voltage detection and reset function, the R3112N251C-TR-F contributes to the overall stability and reliability of electronic systems. This is particularly important in applications where maintaining a stable voltage supply is critical for reliable performance and preventing data corruption. The precision and low power consumption make it a suitable choice for sensitive applications.