The R3130N26EA3-TR-FB is a voltage detector IC manufactured by Ricoh Electronic Devices Co., Ltd. This IC is designed to monitor the supply voltage and generate a reset signal when the voltage drops below a pre-set threshold, thereby preventing malfunctions due to low voltage conditions.

Applications

• Microcontroller-based systems
• Battery-powered devices
• Power management circuits
• Industrial control equipment
• Consumer electronics

Features

• High-accuracy detection voltage: Offers a precise voltage detection threshold, ensuring reliable reset operation.
• Low supply current: Minimizes power consumption, making it suitable for battery-operated applications.
• Built-in hysteresis: Prevents chattering and oscillation of the reset signal due to noise or voltage fluctuations near the threshold.
• Small package size: Typically available in small SOT packages, enabling compact designs.
• Open-drain output: Provides flexibility in interfacing with various microcontrollers and digital logic circuits.

Benefits

• Prevents data corruption: By resetting the microcontroller during undervoltage conditions, it prevents data corruption in memory and registers.
• Enhances system reliability: Ensures that the system operates within safe voltage limits, improving overall reliability and stability.
• Extends battery life: Low current consumption helps extend battery life in portable devices.
• Simplifies circuit design: Reduces the need for external components, simplifying the design and layout process.
• Protects against voltage drops: Safeguards the system from unexpected voltage drops that could lead to unpredictable behavior.

Additional Details

The R3130N26EA3-TR-FB has a detection voltage of 2.6V. It typically comes in a SOT-23 or similar small outline package. The operating temperature range is generally between -40°C and +85°C. The 'TR' in the part number usually indicates tape and reel packaging for automated assembly. The open-drain output requires an external pull-up resistor to function correctly. For detailed electrical characteristics, timing diagrams, and application examples, refer to the official datasheet provided by Ricoh. The built-in hysteresis ensures stable operation even with noisy supply voltages. The low quiescent current makes it ideal for applications where minimizing power consumption is critical. When integrating this IC into a design, proper decoupling capacitors should be placed close to the supply pins to minimize noise and ensure reliable voltage detection.