The R3112Q401A is a voltage detector IC manufactured by Ricoh. It is designed to monitor voltage levels in electronic circuits and provide a reset signal when the voltage drops below a certain threshold. This IC is used in various applications to ensure proper system operation and prevent data corruption.

Applications

• Microcontroller Reset Circuits
• Power Supply Monitoring
• Battery-Powered Devices
• Real-Time Clocks (RTC)
• Memory Protection

Features

• Detection Voltage: 4.0V (fixed)
• Output Type: N-channel open drain
• Reset Active Low: Output goes low when voltage drops below the detection threshold.
• Operating Voltage Range: 1.6V to 5.5V
• Low Supply Current: Typically 1.2 μA
• Package: SOT-23-5

Benefits

• Reliable Voltage Monitoring: Ensures that the system operates within the specified voltage range.
• Prevents Data Corruption: Resets the microcontroller or system to a safe state during undervoltage conditions.
• Low Power Consumption: Extends battery life in portable devices.
• Small Size: SOT-23-5 package allows for high-density circuit designs.
• Easy to Use: Simple to implement in various circuit designs.

Additional Details

The R3112Q401A provides a reliable and cost-effective solution for voltage monitoring in various electronic systems. Its low supply current makes it particularly suitable for battery-powered applications. The open-drain output allows for flexible interfacing with microcontrollers and other digital circuits. The device offers a fixed detection voltage of 4.0V. It is designed to meet industry standards for reliability and performance and is RoHS compliant. The SOT-23-5 package is well-suited for automated assembly processes. The device can be used with an external pull-up resistor to configure the output voltage level. The fast response time ensures that the reset signal is asserted quickly when an undervoltage condition is detected.