The R3112D321A-TR-F is a voltage detector IC manufactured by Ricoh. It is designed to monitor the voltage level of a power supply and generate a reset signal when the voltage drops below a specific threshold. This function is crucial for preventing malfunctions and ensuring the proper operation of microcontrollers and other voltage-sensitive components.

Applications

• Microcontroller reset circuits
• Power supply monitoring
• Battery-powered devices
• Industrial control systems
• Portable electronic devices

Features

• High-accuracy detection voltage: 3.2V
• Low supply current
• Small package size: SOT-23-5
• Built-in hysteresis
• Open drain output
• Operating temperature range: -40°C to +85°C

Benefits

• Reliable Voltage Detection: High-accuracy detection ensures proper system reset during undervoltage conditions, preventing erratic behavior.
• Extended Battery Life: Low current consumption minimizes power drain, extending battery life in portable applications.
• Compact Design: Small SOT-23-5 package saves valuable board space in miniaturized devices.
• Stable Operation: Built-in hysteresis prevents oscillations and ensures a stable reset signal.
• Flexible Interfacing: Open drain output allows for versatile connection to various microcontroller and logic circuits.
• Robust Performance: Wide operating temperature range ensures reliable operation in diverse environments.

The R3112D321A-TR-F features a detection voltage of 3.2V. Its open drain output requires a pull-up resistor to function correctly. The low supply current is beneficial in applications where power consumption is critical. The small SOT-23-5 package is well-suited for space-constrained designs. The device operates over a wide temperature range, making it suitable for many different applications. The built-in hysteresis improves the stability of the output signal by preventing oscillation.