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REG103FA-5

REG103FA-5 Description

The REG103FA-5 is a linear regulator IC designed by Burr-Brown, a subsidiary of Texas Instruments, and is categorized under Power Management (PMIC). This regulator is known for its robust performance and efficiency, making it suitable for a wide range of applications. It features a fixed 5V output voltage with a maximum output current of 500mA. The regulator operates with a maximum input voltage of 15V and boasts a low quiescent current of 0.7mA, ensuring minimal power consumption even in standby mode. The device is housed in a surface-mount package, specifically a DDPAK/TO263, which is ideal for compact and high-density designs. Despite its small form factor, the REG103FA-5 offers a high level of protection with features such as over-current and over-temperature protection, ensuring reliable operation under various conditions. Although the product is now obsolete, its legacy continues to influence modern power management solutions.

REG103FA-5 Features

• Output Voltage: Fixed at 5V, ensuring stable power supply for various electronic components.
• Output Current: Capable of delivering up to 500mA, making it suitable for applications requiring moderate power.
• Input Voltage Range: Operates efficiently with a maximum input voltage of 15V, providing flexibility in power source selection.
• Low Quiescent Current: Consumes only 0.7mA in standby mode, which is crucial for battery-operated devices to extend operational life.
• High PSRR: Features a Power Supply Rejection Ratio (PSRR) of 65dB at 120Hz, ensuring minimal noise and ripple in the output voltage.
• 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.
• Protection Features: Includes over-current and over-temperature protection, safeguarding the device and connected circuits from damage.
• Control Features: Equipped with an enable function, allowing for precise control over the regulator's operation.
• Mounting Type: Surface mount, ideal for modern PCB designs that require compact and space-efficient components.
• Package Type: DDPAK/TO263, offering a robust and thermally efficient package for reliable performance.

REG103FA-5 Applications

The REG103FA-5 is well-suited for a variety of applications where a stable and efficient power supply is essential. Its fixed 5V output and moderate current capability make it ideal for powering microcontrollers, sensors, and other low-power electronic devices. The regulator's low dropout voltage and high PSRR ensure minimal power loss and noise, making it suitable for precision analog circuits and communication systems. Additionally, its surface-mount package and enable function make it a versatile choice for embedded systems and IoT devices where space and power efficiency are critical.

Conclusion of REG103FA-5

The REG103FA-5 is a testament to Burr-Brown's commitment to delivering high-performance power management solutions. Despite its obsolescence, the regulator's technical specifications and features continue to set a benchmark for modern linear regulators. Its low quiescent current, high PSRR, and low dropout voltage make it an efficient and reliable choice for applications requiring stable power supply. The inclusion of over-current and over-temperature protection further enhances its robustness, making it suitable for demanding environments. While newer alternatives may have emerged, the REG103FA-5 remains a valuable reference for engineers and designers seeking to understand the evolution of power management ICs.