The R3112N251A-TR is a voltage detector manufactured by Ricoh Electronic Devices Co., Ltd. This IC is designed to monitor the voltage level of a power supply and generate a reset signal when the voltage drops below a specified threshold. This is crucial for ensuring the reliable operation of microcontrollers and other digital circuits, preventing data corruption and system malfunctions due to 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 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 shutdown sequence.
• Industrial Control Systems: Ensures 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 with high accuracy to ensure reliable 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 a compact package 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 R3112N251A-TR voltage detector has a detection voltage of 2.5V. The built-in delay circuit ensures that the reset signal is only asserted after the voltage has been stable for a certain period, preventing false resets due to momentary voltage fluctuations. The device's low current consumption makes it ideal for use in battery-powered devices where minimizing power usage is essential. The small package size allows for easy integration into a wide range of electronic devices, even those with limited space. The "TR" suffix indicates that the device is supplied in tape and reel packaging, which is designed for use in automated assembly processes.

By providing a reliable and accurate voltage detection and reset function, the R3112N251A-TR contributes to the overall stability and reliability of electronic systems. This is crucial in applications where maintaining a stable voltage supply is critical for reliable performance and preventing data corruption.