The R3111N252C-TR is a voltage detector IC manufactured by Ricoh. It is a highly accurate and low supply current voltage detector featuring a built-in delay circuit. This IC is designed to monitor voltage levels and provide a reset signal when the voltage drops below a predefined threshold, ensuring the stable operation of microcontrollers and other digital circuits.

Applications

• Microcontroller reset circuits
• CPU reset circuits
• System power-on reset circuits
• Battery voltage monitoring
• Power failure detection

Features

• High-accuracy detection voltage: Ensures precise voltage monitoring.
• Low supply current: Minimizes power consumption, extending battery life in portable applications.
• Built-in delay circuit: Prevents false resets due to transient voltage drops.
• Small package: Available in compact packages for space-constrained applications.
• Wide operating voltage range: Offers flexibility in various system environments.
• CMOS process: Provides high stability and low power consumption.

Benefits

• Improved system reliability: Prevents malfunctions caused by voltage drops.
• Extended battery life: Low power consumption is ideal for battery-powered devices.
• Simplified circuit design: Integrated delay circuit reduces the need for external components.
• Compact solution: Small package size allows for integration in small form-factor devices.
• Stable operation: CMOS process ensures stable performance over a wide range of temperatures.

Additional Details

The detection voltage of the R3111N252C-TR is typically 2.5V. It includes a hysteresis characteristic to prevent chattering near the threshold voltage. The delay time is typically fixed internally and is designed to be long enough to allow the power supply to stabilize during power-up. This device comes in a small package, such as SOT-23 or DFN, which makes it suitable for high-density board assembly.

The R3111 series provides different voltage detection thresholds, offering designers flexibility in selecting the optimal voltage level for their specific application. It's commonly used in various electronic devices to guarantee proper functioning during power fluctuations. The "-TR" suffix indicates tape and reel packaging for automated assembly processes.