Texas Instruments

REG101UA-3

REG101UA-3 Description

The REG101UA-3 is a high-performance linear voltage regulator from Texas Instruments, designed to provide a stable and reliable power supply for a variety of electronic applications. This regulator features a fixed output voltage of 3V and is capable of delivering a maximum output current of 100mA. It is optimized for low dropout voltage, with a maximum dropout voltage of 0.13V at 100mA, ensuring efficient power conversion even at low input voltages.

The REG101UA-3 is housed in an 8SOIC package, making it suitable for surface-mount applications. It includes several control and protection features, such as an enable pin for power control and over-current and over-temperature protection to ensure safe operation under various conditions. The regulator has a maximum supply current of 650 µA and a quiescent current of 500 µA, contributing to its high efficiency and low power consumption.

REG101UA-3 Features

• Output Type: Fixed
• Input Voltage Range: Up to 10V
• Output Voltage: Fixed at 3V
• Output Current: Up to 100mA
• Low Dropout Voltage: 0.13V @ 100mA
• Supply Current: 650 µA (max)
• Quiescent Current: 500 µA
• Power Supply Rejection Ratio (PSRR): 65dB at 120Hz
• Control Features: Enable pin for power control
• Protection Features: Over-current and over-temperature protection
• Package Type: 8SOIC
• Mounting Type: Surface Mount
• Compliance: REACH Unaffected, ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 2 (1 Year)

REG101UA-3 Applications

The REG101UA-3 is ideal for applications requiring a stable 3V power supply with low power consumption and high efficiency. Its low dropout voltage makes it particularly suitable for battery-powered devices where the input voltage may drop close to the output voltage. The enable pin allows for dynamic power control, making it suitable for systems that require power-saving modes.

Specific use cases include:

• Battery-Powered Devices: The low dropout voltage and low quiescent current make it ideal for applications where battery life is critical.
• Portable Electronics: Its small form factor and surface-mount package make it suitable for compact designs.
• Industrial Control Systems: The over-current and over-temperature protection features ensure reliable operation in harsh environments.
• Medical Devices: The REACH Unaffected and ROHS3 Compliant status make it suitable for use in medical equipment.

Conclusion of REG101UA-3

The REG101UA-3 from Texas Instruments is a robust and efficient linear voltage regulator that offers a fixed 3V output with a maximum current of 100mA. Its low dropout voltage and low quiescent current make it an excellent choice for battery-powered applications, while its enable pin and protection features provide enhanced control and reliability. The 8SOIC package and surface-mount design make it easy to integrate into a variety of electronic systems. Whether used in portable electronics, industrial control systems, or medical devices, the REG101UA-3 delivers reliable performance and high efficiency, making it a standout choice in its category.