The R3130N30EA-TR is a voltage detector IC manufactured by Ricoh Electronic Devices Co., Ltd. This IC is designed to monitor the input voltage and generate a reset signal when the voltage falls below a pre-set threshold. It is commonly used in applications where it is essential to prevent malfunctions caused by low voltage conditions.

Applications

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

Features

• High-accuracy detection voltage: Ensures precise voltage detection and reliable reset operation.
• Low supply current: Minimizes power consumption, making it suitable for battery-powered applications.
• Built-in hysteresis: Prevents chattering and oscillation of the reset signal due to noise or minor voltage fluctuations.
• Small package: Typically available in compact SOT packages, enabling space-saving designs.
• Open-drain output: Provides flexibility in interfacing with various microcontrollers and 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.
• Extends battery life: Low current consumption helps extend battery life in portable devices.
• Simplifies circuit design: Reduces the number of external components needed for voltage monitoring and reset functionality.
• Protects against voltage drops: Safeguards the system from unexpected voltage drops that could lead to unpredictable behavior.

Additional Details

The R3130N30EA-TR has a detection voltage of 3.0V. It is generally supplied in a SOT-23 or similar small surface-mount package. The 'TR' suffix indicates that it is provided on tape and reel for automated assembly. The operating temperature range usually spans from -40°C to +85°C. The open-drain output requires an external pull-up resistor to function correctly. Detailed electrical characteristics, timing diagrams, and application examples can be found in the official datasheet from Ricoh. The built-in hysteresis provides stable operation even in noisy environments. When integrating this IC into a design, ensure proper decoupling capacitors are placed close to the supply pins to minimize noise and ensure reliable voltage detection. The low quiescent current is particularly beneficial in applications where minimizing power consumption is critical.