LP3991TL-1.7/NOPB

The LP3991TL-1.7/NOPB is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage with high accuracy and low noise, making it suitable for a variety of applications, including portable devices, battery-powered equipment, and other electronic systems requiring precise voltage regulation.

Key Features:

1. Output Voltage: The LP3991TL-1.7/NOPB provides a fixed output voltage of 1.7V, which is ideal for powering low-voltage digital circuits and components.

2. Low Dropout Voltage: The device features a low dropout voltage, typically around 0.1V at a load current of 100mA. This characteristic allows it to maintain regulation even when the input voltage is only slightly above the output voltage, which is particularly beneficial in battery-operated applications.

3. Output Current: The regulator can supply up to 200mA of output current, making it suitable for a range of applications that require moderate power levels.

4. High Power Supply Rejection Ratio (PSRR): The LP3991TL-1.7/NOPB exhibits 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 advantageous for battery-powered applications as it helps to extend battery life by reducing power consumption when the device is in a standby mode.

6. Thermal Protection: The LP3991TL-1.7/NOPB includes built-in thermal shutdown protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.

7. Package Type: The regulator is available in a small, space-saving package, typically a SOT-23 or similar, which is ideal for compact designs where board space is limited.

8. Operating Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for use in various environmental conditions.

Applications:

• Portable electronics
• Battery management systems
• RF and wireless applications
• Microcontroller power supplies
• Automotive electronics

Conclusion:

The LP3991TL-1.7/NOPB from Texas Instruments is a versatile and efficient LDO voltage regulator that provides reliable performance in a compact package. Its combination of low dropout voltage, high PSRR, and low quiescent current makes it an excellent choice for applications requiring stable and efficient voltage regulation.