UA78L05CD

The UA78L05CD is a low-dropout voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage of 5 volts with a maximum output current of 100 mA. This component is particularly useful in applications where a compact and efficient power supply is required.

Key Features:

1. Output Voltage: The UA78L05CD delivers a fixed output voltage of 5V, making it suitable for powering various low-voltage devices and circuits.

2. Input Voltage Range: The regulator can accept a wide input voltage range, typically from 7V to 20V, allowing it to be used in various power supply configurations.

3. Low Dropout Voltage: One of the standout features of the UA78L05CD is its low dropout voltage, which is typically around 0.2V at full load. This means that it can maintain regulation even when the input voltage is only slightly above the output voltage, making it ideal for battery-powered applications.

4. Thermal Protection: The device includes built-in thermal overload protection, which prevents damage due to overheating. This feature is crucial for maintaining reliability in various operating conditions.

5. Short-Circuit Protection: The UA78L05CD is designed with short-circuit protection, ensuring that the device can withstand accidental short circuits without sustaining damage.

6. Package Type: The UA78L05CD is available in a compact TO-220 package, which facilitates easy mounting on PCBs and provides good thermal dissipation characteristics.

7. Low Noise: The regulator is designed to minimize output noise, making it suitable for sensitive electronic applications where power supply noise can affect performance.

8. Application Areas: Common applications for the UA78L05CD include powering microcontrollers, sensors, and other low-power digital circuits, as well as in battery-operated devices where efficiency is critical.

Electrical Characteristics:

• Output Current: 100 mA (maximum)
• Dropout Voltage: Typically 0.2V at full load
• Operating Temperature Range: Typically from -40°C to +125°C
• Line Regulation: Typically 0.1%/V
• Load Regulation: Typically 0.1%/mA

Conclusion:

The UA78L05CD from Texas Instruments is a reliable and efficient voltage regulator that is well-suited for a variety of electronic applications. Its combination of low dropout voltage, thermal protection, and compact packaging makes it a popular choice among engineers and hobbyists alike. Whether used in consumer electronics, industrial applications, or DIY projects, the UA78L05CD provides a stable and dependable power source.