The R3111N301A-TR is a voltage detector IC manufactured by Ricoh. It is designed to accurately monitor voltage levels and provide a reliable reset signal when the voltage falls below a specified threshold. This function is crucial for ensuring the proper operation of microcontrollers (MCUs) and other digital circuits in a wide range of electronic devices.

Applications

• Microcontroller reset circuits
• Power management systems
• Battery-powered devices
• Portable electronic devices
• Real-time clocks (RTCs)
• Voltage monitoring in industrial equipment

Features

• High-accuracy voltage detection: Ensures precise monitoring of the supply voltage.
• Low supply current: Minimizes power consumption, extending battery life in portable devices.
• Built-in hysteresis: Prevents oscillation of the reset signal due to noise or voltage fluctuations.
• Small 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

• Prevents system malfunctions: By providing a reliable reset signal, the R3111N301A-TR helps to prevent system crashes and data corruption.
• 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 R3111N301A-TR features a detection voltage of typically 3.0V. The "-TR" suffix indicates that it is supplied in a tape and reel package for automated assembly. It operates over a wide temperature range, typically from -40°C to +85°C, and has a low supply current, typically in the microampere range. The output is an N-channel open drain. Consult the datasheet for precise electrical characteristics and application guidelines.