Texas Instruments

REG101UA-A/2K5

REG101UA-A/2K5 Description

The REG101UA-A/2K5 is a linear positive adjustable voltage regulator designed by Texas Instruments, a leading manufacturer in the field of power management integrated circuits (PMICs). This IC offers a versatile solution for applications requiring a stable and adjustable output voltage. The regulator supports an input voltage range up to 10V and provides a maximum output current of 100mA. It features a low dropout voltage of 0.13V at 100mA, ensuring efficient power delivery even at low input-to-output voltage differentials. The output voltage can be adjusted between 2.5V and 5.5V, making it suitable for a wide range of electronic devices.

REG101UA-A/2K5 Features

• Adjustable Output Voltage: The REG101UA-A/2K5 allows for an adjustable output voltage ranging from 2.5V to 5.5V, providing flexibility to meet various power requirements.
• Low Dropout Voltage: With a maximum dropout voltage of 0.13V at 100mA, this regulator ensures high efficiency and minimal power loss, making it ideal for battery-powered applications.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 65dB at 120Hz, effectively filtering out noise from the input power supply and ensuring clean output voltage.
• Enable Control Feature: The enable control feature allows for dynamic power management, enabling or disabling the regulator as needed to optimize power consumption.
• Protection Features: Integrated over-current and over-temperature protection ensures reliable operation and protects the device from damage due to excessive current or temperature.
• Low Quiescent Current: The regulator operates with a low quiescent current of 500 µA, contributing to energy efficiency and extended battery life in portable devices.
• Surface Mount Package: The surface mount package (Tape & Reel) facilitates easy integration into compact and high-density PCB designs.
• Compliance: The REG101UA-A/2K5 is REACH unaffected and RoHS3 compliant, ensuring environmental sustainability and adherence to regulatory standards.

REG101UA-A/2K5 Applications

The REG101UA-A/2K5 is well-suited for a variety of applications where stable and adjustable power supply is critical. Key applications include:

• Portable Electronics: Ideal for battery-operated devices such as smartphones, tablets, and wearable technology, where low dropout voltage and high efficiency are essential.
• Consumer Electronics: Suitable for devices like digital cameras, media players, and gaming consoles that require reliable power management.
• Industrial Equipment: Applicable in industrial control systems, sensors, and IoT devices that demand precise voltage regulation and low power consumption.
• Medical Devices: Can be used in medical equipment such as portable monitors and diagnostic tools, where stable power supply and low noise are crucial.

Conclusion of REG101UA-A/2K5

The REG101UA-A/2K5 from Texas Instruments is a robust and versatile linear voltage regulator that offers adjustable output voltage, low dropout voltage, and high PSRR. Its unique features, such as enable control and integrated protection mechanisms, provide enhanced performance and reliability. Despite being marked as obsolete, the REG101UA-A/2K5 remains a valuable component for applications requiring efficient power management. Its compliance with environmental standards and surface mount package make it a practical choice for modern electronic designs.