The R3112N261A-TR-F is a voltage detector IC manufactured by Ricoh Electronic Devices Co., Ltd. It is specifically designed to monitor voltage levels and provide a reset signal to microcontrollers or other digital circuits when the voltage drops below a predefined threshold. This functionality is crucial for maintaining stable operation and preventing malfunctions in electronic devices, especially in situations involving power fluctuations or battery depletion.

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 to detect undervoltage conditions and prevent damage to connected devices.
• Battery-Powered Devices: Protects battery-operated devices from deep discharge by detecting low battery voltage and initiating a controlled shutdown.
• Industrial Control Systems: Ensures stable operation of industrial equipment by monitoring voltage levels and preventing malfunctions caused by voltage drops.
• Automotive Electronics: Monitors voltage levels in automotive systems to ensure the proper functioning of electronic components, such as engine control units (ECUs) and infotainment systems.

Features

• High-Accuracy Voltage Detection: Offers precise voltage monitoring with minimal deviation from the specified threshold.
• Built-in Delay Circuit: Includes a delay circuit to prevent spurious resets caused by brief voltage dips or noise.
• Low Current Consumption: Designed for minimal power draw, making it suitable for battery-powered and energy-sensitive applications.
• Small Package Size: Available in compact packages for space-constrained applications, allowing for easy integration into various electronic devices.
• Tape and Reel Packaging (TR): Supplied in tape and reel packaging, which facilitates automated assembly processes and reduces manufacturing costs.

Benefits

• Improved System Stability: Prevents system crashes and malfunctions caused by voltage drops, ensuring reliable operation.
• Reliable Reset Function: Ensures a proper reset of the microcontroller during power-up, power-down, or brown-out conditions, preventing unpredictable behavior.
• Extended Battery Life: Reduces power consumption in battery-powered devices, extending their operating time and minimizing the need for frequent battery replacements.
• Simplified Circuit Design: The integrated delay circuit eliminates the need for external components, simplifying circuit design and reducing the overall bill of materials.
• Reduced Manufacturing Costs: Tape and reel packaging enables automated assembly, reducing labor costs and improving production efficiency.

The R3112N261A-TR-F has a detection voltage of 2.6V. The built-in delay circuit ensures that the reset signal is asserted only after the voltage has been stable above the threshold for a defined period, preventing false resets due to transient voltage dips. The low current consumption is especially beneficial in battery-powered applications, extending the operational lifespan of the device. The “-TR” suffix indicates that the component is supplied in tape and reel packaging for automated assembly, and the "-F" suffix might denote a specific feature, such as a tighter tolerance or a different delay time.

The R3112N261A-TR-F significantly enhances the reliability and stability of electronic systems. Its precise voltage detection, integrated delay, and low power consumption make it an ideal choice for a wide range of applications, from portable devices to industrial control systems. By preventing malfunctions caused by voltage fluctuations, it contributes to overall system performance and longevity.