Texas Instruments

REG101UA-2.8

REG101UA-2.8 Description

The REG101UA-2.8 is a linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 2.8V with a maximum output current of 100mA. This device is housed in an 8SOIC package, making it suitable for surface-mount applications. Despite being marked as obsolete, the REG101UA-2.8 remains a reliable choice for applications requiring a stable power supply with minimal voltage dropout and efficient power management.

REG101UA-2.8 Features

• Output Type: Fixed, ensuring a stable 2.8V output voltage.
• Input Voltage Range: Capable of handling input voltages up to 10V, providing flexibility in power supply design.
• Output Current: Delivers a consistent 100mA, suitable for low-power applications.
• Voltage Dropout: An impressively low dropout voltage of 0.13V at 100mA, enhancing efficiency and reducing power loss.
• Power Supply Rejection Ratio (PSRR): Achieves 65dB at 120Hz, ensuring high performance in noisy environments.
• Quiescent Current: Maintains a low quiescent current of 500 µA, contributing to overall power efficiency.
• Protection Features: Includes over-current and over-temperature protection, safeguarding the device and connected circuits.
• Control Features: Equipped with an enable pin, allowing for dynamic control of the regulator's operation.
• Compliance: REACH unaffected and RoHS3 compliant, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level (MSL): Rated at MSL 2 (1 Year), suitable for various manufacturing environments.

REG101UA-2.8 Applications

The REG101UA-2.8 is ideal for applications requiring a stable and efficient power supply with minimal voltage dropout. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices and low-power systems where efficiency and noise rejection are critical. Specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics where battery life and efficiency are paramount.
• Low-Power Systems: Suitable for applications such as IoT devices, sensors, and microcontrollers that require minimal power consumption.
• Noise-Sensitive Applications: The high PSRR ensures stable performance in environments with significant electromagnetic interference.
• Dynamic Power Management: The enable pin allows for dynamic control, making it suitable for systems that require power-saving modes.

Conclusion of REG101UA-2.8

The REG101UA-2.8 from Texas Instruments is a robust and efficient linear voltage regulator, offering a fixed 2.8V output with a maximum current of 100mA. Its low dropout voltage and high PSRR make it an excellent choice for low-power and noise-sensitive applications. Despite being marked as obsolete, the device's reliability and performance continue to make it a viable option for various electronic systems. The inclusion of over-current and over-temperature protection further enhances its durability and safety. For applications requiring a stable and efficient power supply, the REG101UA-2.8 remains a compelling choice.