LP3990TLX-0.8/NOPB

The LP3990TLX-0.8/NOPB is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage with low noise and high power supply rejection, making it suitable for a variety of applications, including portable devices, RF applications, and other sensitive electronic circuits.

Key Features:

1. Output Voltage: The LP3990TLX-0.8/NOPB provides a fixed output voltage of 0.8V, which is ideal for powering low-voltage digital circuits and processors.

2. Low Dropout Voltage: The device features a low dropout voltage, typically around 200mV at a load current of 1A. This allows it to maintain regulation even when the input voltage is only slightly above the output voltage, which is crucial for battery-powered applications.

3. High Output Current: The regulator can deliver up to 1A of output current, making it suitable for applications that require significant power.

4. Power Supply Rejection Ratio (PSRR): The LP3990 offers excellent PSRR, which helps to minimize the impact of input voltage fluctuations on the output voltage, ensuring a clean and stable power supply.

5. Low Quiescent Current: The device has a low quiescent current, which is beneficial for battery-operated devices as it helps to extend battery life.

6. Thermal Protection: The LP3990 includes thermal shutdown features to protect the device from overheating, ensuring reliable operation under varying load conditions.

7. Compact Package: The regulator is available in a small, surface-mount package (such as the SOT-23), which is advantageous for space-constrained designs.

8. Operating Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

Applications:

• Portable Electronics: Ideal for smartphones, tablets, and other handheld devices that require efficient power management.
• RF and Communication Equipment: Suitable for powering RF circuits where low noise and high stability are critical.
• Microcontrollers and DSPs: Provides a reliable power source for microcontrollers and digital signal processors that operate at low voltages.

Conclusion:

The LP3990TLX-0.8/NOPB from Texas Instruments is a versatile and efficient LDO voltage regulator that meets the demands of modern electronic applications requiring low voltage, high current, and low noise. Its combination of features makes it an excellent choice for designers looking to enhance the performance and reliability of their power management solutions.