The R3112Q281A-TR is a voltage detector manufactured by Ricoh Electronic Devices Co., Ltd. It is designed for use in a variety of electronic applications requiring accurate voltage monitoring and reset functionality. The device operates with high precision and low current consumption, making it suitable for battery-powered and energy-efficient systems.

Applications

• Microcontroller reset circuits
• Power management systems
• Battery monitoring
• System voltage supervision
• Portable electronic devices

Features

• High-accuracy detection voltage: Ensures reliable voltage monitoring.
• Low supply current: Contributes to energy efficiency.
• Small package: Suitable for compact devices.
• Built-in hysteresis: Prevents chattering during voltage fluctuations.
• Open drain output: Offers flexible interface options.

Benefits

• Improved system reliability: Prevents malfunctions caused by voltage drops.
• Extended battery life: Minimizes power consumption.
• Simplified circuit design: Reduces component count and board space.
• Enhanced noise immunity: Ensures stable operation in noisy environments.
• Flexible integration: Compatible with various microcontroller and logic systems.

Additional Details

The R3112Q281A-TR features a detection voltage of 2.8V. It is typically used to reset a microcontroller when the supply voltage drops below this threshold. The device includes hysteresis to prevent oscillations near the threshold voltage. The output is an N-channel open drain, which allows it to be easily interfaced with a pull-up resistor to the desired voltage level. This specific part comes in a small package, usually SOT-23 or similar, appropriate for high-density board layouts. The operating temperature range is typically -40°C to +85°C, making it suitable for a wide range of environments. The TR suffix indicates tape and reel packaging for automated assembly processes.