Texas Instruments

REG101UA-3.3

REG101UA-3.3 Description

The REG101UA-3.3 is a linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 3.3V with a maximum output current of 100mA. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is housed in an 8SOIC package. It features a maximum input voltage of 10V and a dropout voltage of 0.13V at 100mA, ensuring efficient operation even under varying input conditions. The regulator is designed for surface-mount applications, providing a compact and reliable solution for a wide range of electronic devices.

REG101UA-3.3 Features

• Fixed Output Voltage: The REG101UA-3.3 provides a stable 3.3V output, making it suitable for applications requiring a precise and consistent power supply.
• High Efficiency: With a low dropout voltage of 0.13V at 100mA, the regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Low Quiescent Current: The regulator operates with a quiescent current of 500 µA, minimizing power consumption during idle periods.
• Enable Control Feature: The enable pin allows for dynamic control of the regulator, enabling or disabling the output voltage as needed.
• Protection Features: Over-current and over-temperature protection ensure the regulator's longevity and reliability, safeguarding against potential damage.
• High PSRR: A Power Supply Rejection Ratio (PSRR) of 65dB at 120Hz helps in filtering out noise from the input supply, resulting in a cleaner output voltage.
• Compliance and Reliability: The REG101UA-3.3 is REACH unaffected and RoHS3 compliant, meeting stringent environmental and safety standards. It also features a moisture sensitivity level (MSL) of 2, ensuring robustness in various environmental conditions.

REG101UA-3.3 Applications

The REG101UA-3.3 is ideal for a variety of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering microcontrollers, sensors, and other low-power devices in consumer electronics.
• Industrial Equipment: Suitable for industrial applications requiring a reliable and efficient power supply, such as PLCs and automation systems.
• Telecommunications: Provides stable power for communication modules and IoT devices.
• Medical Devices: Ensures reliable operation for low-power medical equipment, contributing to patient safety and device performance.
• Automotive Electronics: Suitable for automotive applications where a compact and efficient power solution is needed.

Conclusion of REG101UA-3.3

The REG101UA-3.3 from Texas Instruments is a high-performance linear voltage regulator that offers a stable 3.3V output with a maximum current of 100mA. Its low dropout voltage, low quiescent current, and high PSRR make it an efficient and reliable choice for a wide range of applications. The enable control feature and robust protection mechanisms further enhance its versatility and durability. With its compact 8SOIC package and surface-mount design, the REG101UA-3.3 is an excellent solution for designers looking to optimize space and performance in their electronic systems.