The Ricoh R3111N221A-TR-FB is a high-accuracy voltage detector IC designed for battery monitoring and system reset applications. This device monitors the input voltage and provides a reset signal when the voltage drops below a predefined threshold. It features low supply current and high detection accuracy, making it suitable for portable devices and other battery-powered systems.

Applications:

• Microcontroller reset circuits
• Battery-powered devices
• Power management systems
• Portable electronics
• Voltage monitoring circuits

Features:

• High-accuracy voltage detection.
• Ultra-low supply current.
• Open-drain output.
• Small package size.
• Hysteresis for stable operation.

Benefits:

• Prevents microcontroller malfunction by providing a reliable reset signal.
• Extends battery life due to low supply current.
• Simplifies circuit design with minimal external components.
• Saves board space with a compact package.
• Ensures stable operation in noisy environments.

Additional Details:

The R3111N221A-TR-FB has a detection voltage of 2.2V (This should be confirmed in the datasheet), and it operates over a wide temperature range. The open-drain output allows for flexible connection to various microcontrollers and other digital circuits. The hysteresis feature prevents chattering and ensures a clean reset signal. It is commonly used in applications where reliable voltage monitoring and reset functionality are crucial.