The R3111N341A-TR-FA is a voltage detector IC manufactured by Ricoh. This IC is designed to monitor the voltage level of a power supply and provide a reset signal when the voltage drops below a certain threshold. This function is crucial for preventing malfunctions and data corruption in electronic systems, particularly in battery-powered and voltage-sensitive applications.

Applications

• Microcontroller (MCU) reset circuits
• Battery-powered devices (smartphones, tablets, wearables)
• Power management systems
• System voltage monitoring
• Real-time clock (RTC) backup
• Portable electronic devices

Features

• High-accuracy voltage detection: Ensures precise monitoring of the supply voltage.
• Low supply current: Minimizes power consumption, which is critical in battery-powered applications.
• Built-in hysteresis: Prevents oscillation of the reset signal caused by noise or slight voltage fluctuations.
• Small SOT-23 package: Allows for compact and efficient PCB designs.
• Open drain output: Provides flexibility in interfacing with various logic circuits and voltage levels.
• Wide operating temperature range: Enables reliable operation in diverse environmental conditions.

Benefits

• Enhances system reliability: Prevents data corruption and system crashes due to undervoltage conditions.
• Extends battery life: Low power consumption enables longer operating times in battery-powered devices.
• Simplifies circuit design: The small package and integrated features reduce the need for external components.
• Improves system stability: The hysteresis feature prevents false triggering and ensures a clean reset signal.
• Cost-effective solution: Provides a reliable voltage detection function at a competitive price.

Technical Specifications

The R3111N341A-TR-FA features a specific detection voltage, typically around 3.4V (consult the official datasheet for the exact value). The "-TR" suffix indicates that it is supplied in tape and reel packaging for automated assembly. The "-FA" likely denotes a specific manufacturing process or lead-free finish. The output is an N-channel open drain configuration. It operates over a wide temperature range, typically from -40°C to +85°C. For detailed electrical characteristics, package dimensions, and application notes, refer to the official datasheet from Ricoh.