The R3130N26EA-TR-FB is a voltage detector IC manufactured by Ricoh. This device is designed to monitor the supply voltage of a system and generate a reset signal when the voltage falls below a specified threshold. This is crucial for preventing malfunctions and ensuring reliable operation, particularly in microcontroller-based systems.

Applications

• Microcontroller reset circuits
• Power management systems for portable devices
• Backup power systems
• Industrial control equipment
• Consumer electronics

Features

• High-accuracy voltage detection: Provides precise monitoring of the supply voltage.
• Low current consumption: Minimizes power drain, making it suitable for battery-powered applications.
• Built-in hysteresis: Prevents oscillations and chattering around the threshold voltage.
• Small package size: Available in compact packages, such as SOT-23, for space-constrained applications.
• Open-drain output: Allows for flexible connection to different logic levels and microcontrollers.

Benefits

• Prevents system crashes: By resetting the microcontroller during undervoltage conditions, it prevents data corruption and system instability.
• Ensures data integrity: Protects against erroneous data writes and reads during voltage drops.
• Extends battery life: Low power consumption contributes to longer battery life in portable devices.
• Simplifies design: Reduces the number of external components required for voltage monitoring and reset functionality.
• Enhances system reliability: Provides a reliable and predictable response to voltage fluctuations.

Additional Details

The R3130N26EA-TR-FB features a detection voltage of 2.6V. It typically comes in a SOT-23 package for surface mount assembly. The 'TR' in the part number indicates that it is supplied on tape and reel for automated assembly processes. The operating temperature range is generally between -40°C and +85°C. The open-drain output requires a pull-up resistor to function correctly. The datasheet provides detailed electrical characteristics, timing diagrams, and application notes. Hysteresis is included to prevent spurious resets due to noise or minor voltage fluctuations. Proper decoupling capacitors should be used near the power supply pins to ensure stable and accurate voltage detection. This IC is suitable for a wide range of applications where reliable voltage monitoring and reset functionality are required.