The R3111N331C-TR is a voltage detector IC manufactured by Ricoh. This device is designed to monitor the supply voltage of electronic systems and provide a reset signal when the voltage drops below a certain threshold. This function is critical to prevent malfunctions and data corruption caused by undervoltage conditions, ensuring the reliable operation of various electronic devices.

Applications

• Microcontroller reset circuits
• Power management systems
• Battery-powered equipment
• Portable electronic devices
• CPU voltage monitoring
• Real-time clock (RTC) backup

Features

• High-accuracy voltage detection: Precise monitoring of the supply voltage.
• Low supply current: Minimizes power consumption, extending battery life in portable applications.
• Built-in hysteresis: Prevents output oscillation due to noise or voltage fluctuations.
• Small SOT-23 package: Allows for compact designs and efficient use of board space.
• Open drain output: Provides flexibility in interfacing with various logic circuits.
• Wide operating temperature range: Enables reliable operation in diverse environmental conditions.

Benefits

• Protects against system failures: By providing a reliable reset signal, the R3111N331C-TR helps to prevent system crashes and data corruption due to undervoltage.
• Extends battery life: The low supply current of the IC contributes to longer battery life in portable applications.
• Improves system reliability: The built-in hysteresis and accurate voltage detection ensure stable and reliable operation.
• Simplifies circuit design: The small package and open drain output facilitate easy integration into various circuit designs.
• Cost-effective solution: Provides a reliable voltage detection function at a competitive price.

Technical Specifications

The R3111N331C-TR features a detection voltage, which is typically 3.3V (confirm this value with the official datasheet). The "-TR" suffix indicates that it's supplied in tape and reel packaging for automated assembly processes. It's designed to operate over a wide temperature range, commonly from -40°C to +85°C. The output is an N-channel open drain type. Refer to the Ricoh datasheet for comprehensive electrical characteristics, package information, and application examples.