The REG101UA-2.5/2K5G4 is a high-precision, low-power voltage regulator from the renowned semiconductor manufacturer, Texas Instruments. This regulator is designed to provide a fixed output voltage of 2.5V with an impressive low dropout of just 500mV at a full load of 100mA. The device is part of the REG101 series, known for their excellent regulation and low noise characteristics, making them ideal for sensitive RF and analog circuitry.

Key Features

• Low Dropout Voltage: The regulator operates with a very low dropout voltage, ensuring efficient operation even when the input voltage is close to the output voltage.
• High Accuracy: Output voltage is maintained with high accuracy, with a precision of ±0.5% at 25°C, which is crucial for reliable performance in precision applications.
• Low Quiescent Current: The REG101UA-2.5/2K5G4 boasts a low quiescent current of 1µA in shutdown mode, making it suitable for battery-powered applications where power conservation is key.
• Thermal Protection: The device includes an internal thermal shutdown mechanism that protects the circuit from damage due to excessive heat.
• Current and Thermal Limiting: Built-in current limiting and thermal overload protection features ensure the longevity and reliability of both the regulator and the overall system.
• Package Options: Available in a variety of packages, including the small SOT-23, which is ideal for space-constrained applications.

Applications

The REG101UA-2.5/2K5G4 is suited for a wide range of applications, particularly where power efficiency and low noise are essential. These include:

• Battery-powered devices
• Portable and wearable technology
• RF circuits
• Analog circuits
• Microcontroller power supply
• Medical devices

Conclusion

With its combination of low dropout voltage, high accuracy, low quiescent current, and robust protection features, the REG101UA-2.5/2K5G4 from Texas Instruments stands out as an exemplary voltage regulator for applications demanding high precision and efficiency. Its compact form factor and versatile package options further enhance its suitability for a broad spectrum of designs and products.