Texas Instruments

REG101UA-2.8/2K5

REG101UA-2.8/2K5 Description

The REG101UA-2.8/2K5 is a linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 2.8V and a maximum output current of 100mA. This regulator is housed in an 8SOIC package, making it suitable for surface-mount applications. Despite its small form factor, the REG101UA-2.8/2K5 delivers robust performance with a maximum input voltage of 10V and a dropout voltage of only 0.13V at 100mA. The device is designed with an enable control feature, allowing for dynamic power management and enhanced flexibility in system design.

REG101UA-2.8/2K5 Features

• Fixed Output Voltage: The regulator provides a stable 2.8V output, ensuring consistent power supply to sensitive electronic components.
• Low Dropout Voltage: With a maximum dropout voltage of 0.13V at 100mA, the REG101UA-2.8/2K5 ensures high efficiency and minimal power loss, making it ideal for applications where input voltage may be close to the desired output voltage.
• Low Quiescent Current: The device operates with a quiescent current of 500 µA, minimizing power consumption during standby or low-load conditions.
• Enable Control Feature: This feature allows for dynamic power management, enabling the regulator to be turned on or off as needed, which is particularly useful in power-sensitive applications.
• Protection Features: The regulator includes over-current and over-temperature protection, safeguarding both the device and connected components from potential damage.
• High PSRR: The regulator boasts a power supply rejection ratio (PSRR) of 65dB at 120Hz, ensuring minimal noise and ripple in the output voltage.
• Compliance and Reliability: The REG101UA-2.8/2K5 is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It also has a moisture sensitivity level (MSL) of 2, ensuring reliability in various environmental conditions.

REG101UA-2.8/2K5 Applications

The REG101UA-2.8/2K5 is well-suited for a variety of applications that require a stable and efficient power supply. Its low dropout voltage and fixed output make it ideal for portable devices, battery-powered systems, and applications where space is limited. Specific use cases include:

• Portable Electronics: The regulator's low dropout voltage and small form factor make it perfect for powering devices such as smartphones, tablets, and wearable technology.
• Battery-Powered Systems: The ability to operate efficiently at low input voltages ensures that the regulator can extend battery life in applications such as medical devices, remote sensors, and IoT devices.
• Industrial Equipment: The device's robust protection features and compliance with industry standards make it suitable for industrial applications where reliability and safety are paramount.
• Consumer Electronics: The REG101UA-2.8/2K5 can be used in a wide range of consumer electronics, from gaming consoles to home automation systems, providing a stable power supply with minimal noise and ripple.

Conclusion of REG101UA-2.8/2K5

The REG101UA-2.8/2K5 from Texas Instruments is a versatile and efficient linear voltage regulator that offers a stable 2.8V output with minimal power loss. Its low dropout voltage, low quiescent current, and enable control feature make it an ideal choice for a variety of applications, particularly those requiring high efficiency and dynamic power management. Despite its obsolete status, the regulator remains a reliable option for designers seeking a compact, high-performance solution for their power supply needs.