The R3112D221A-TR-F is a voltage detector IC manufactured by Ricoh. It's designed to accurately monitor voltage levels and provide a reset signal when the voltage drops below a certain threshold. This feature is crucial for ensuring the reliable operation of microcontrollers and other sensitive electronic components.

Applications

• Microcontroller reset circuits
• Power monitoring in battery-powered devices
• Voltage supervision in industrial control systems
• System power management in portable electronics
• Over-discharge protection in battery packs

Features

• High-accuracy detection voltage: 2.2V
• Low supply current
• Small package size: SOT-23-5
• Built-in hysteresis
• Open drain output
• Wide operating temperature range

Benefits

• Reliable voltage monitoring: The high-accuracy detection voltage ensures precise voltage level monitoring, preventing system malfunctions due to undervoltage conditions.
• Extended battery life: The low supply current minimizes power consumption, extending the operating life of battery-powered devices.
• Space-saving design: The small package size allows for integration into compact electronic devices.
• Noise immunity: The built-in hysteresis prevents chattering of the reset signal due to noise on the power supply line.
• Flexible system design: The open drain output allows for easy interfacing with various microcontroller and logic circuits.
• Robust operation: The wide operating temperature range ensures reliable performance in harsh environments.

The R3112D221A-TR-F features a detection voltage of 2.2V. The open drain output configuration requires a pull-up resistor. It is offered in a SOT-23-5 package. This device is crucial for maintaining the stability and integrity of electronic systems by preventing them from operating under insufficient voltage conditions, ensuring long-term reliability and performance.