Texas Instruments

REG103UA-3/2K5

REG103UA-3/2K5 Description

The REG103UA-3/2K5 is a linear voltage regulator designed by Texas Instruments, offering a fixed output voltage of 3V and a maximum output current of 500mA. This device is housed in an 8-SOIC package, making it suitable for surface-mount applications. Despite being marked as obsolete, the REG103UA-3/2K5 remains a reliable choice for applications requiring a stable and efficient power supply.

REG103UA-3/2K5 Features

• Output Type: Fixed, ensuring a stable 3V output voltage.
• Input Voltage Range: Capable of handling a maximum input voltage of 15V, providing flexibility in power supply options.
• Output Current: Delivers a robust 500mA output current, suitable for a wide range of electronic devices.
• Low Dropout Voltage: With a maximum dropout voltage of 0.28V at 500mA, the regulator maintains high efficiency even at low input-to-output voltage differentials.
• Control Features: Includes an enable function, allowing for dynamic control of the regulator's operation.
• Protection Features: Equipped with over-current and over-temperature protection, ensuring reliable operation and safeguarding against potential faults.
• Low Quiescent Current: Consumes only 0.7mA in quiescent mode, minimizing power loss during standby.
• High PSRR: Achieves a power supply rejection ratio (PSRR) of 65dB at 120Hz, effectively filtering out noise from the input power supply.
• Compliance: RoHS3 compliant and REACH unaffected, meeting stringent environmental and regulatory standards.
• Mounting Type: Surface mount, compatible with modern PCB assembly techniques.
• Package: Supplied in tape and reel (TR) format, facilitating efficient manufacturing processes.

REG103UA-3/2K5 Applications

The REG103UA-3/2K5 is ideal for applications requiring a stable and efficient power supply with low dropout voltage. Its fixed 3V output and 500mA current capability make it suitable for:

• Embedded Systems: Providing a stable power source for microcontrollers, sensors, and other low-power electronics.
• Consumer Electronics: Ideal for portable devices where battery life and efficiency are critical.
• Industrial Control: Reliable power supply for control boards and instrumentation.
• Telecommunications: Powering low-voltage components in communication equipment.

Conclusion of REG103UA-3/2K5

The REG103UA-3/2K5 from Texas Instruments is a robust linear voltage regulator that offers a fixed 3V output with a maximum current of 500mA. Its low dropout voltage, high PSRR, and protection features make it a reliable choice for various applications. Despite being marked as obsolete, the REG103UA-3/2K5 remains a viable option for engineers seeking a stable and efficient power supply solution. Its compliance with environmental standards and surface-mount compatibility further enhance its appeal in modern electronics design.