LP3985IM5-3.3/NOPB

The LP3985IM5-3.3/NOPB is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage of 3.3V with a maximum output current of 150mA. This device is particularly useful in applications where space is limited and efficiency is crucial, such as in portable electronics, battery-powered devices, and other low-power applications.

Key Features:

1. Output Voltage: The LP3985IM5-3.3/NOPB provides a fixed output voltage of 3.3V, making it suitable for powering various digital circuits and microcontrollers that require this specific voltage level.

2. Low Dropout Voltage: The LDO features a low dropout voltage of approximately 0.2V at full load, which allows it to maintain regulation even when the input voltage is close to the output voltage. This characteristic is particularly beneficial in battery-operated devices where maximizing battery life is essential.

3. Quiescent Current: The device has a low quiescent current, typically around 30µA, which helps to extend battery life in portable applications by minimizing power consumption when the device is not actively driving a load.

4. Thermal Protection: The LP3985IM5-3.3/NOPB includes built-in thermal shutdown protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.

5. Package Type: It comes in a small, surface-mount package (SOT-23), which is ideal for space-constrained designs. The compact size allows for easy integration into printed circuit boards (PCBs).

6. Input Voltage Range: The device can operate with a wide input voltage range, typically from 2.5V to 16V, providing flexibility in various applications.

7. Output Capacitor: The LP3985 is designed to work with a small output capacitor, which helps to stabilize the output voltage and improve transient response.

8. Applications: Common applications for the LP3985IM5-3.3/NOPB include powering microcontrollers, sensors, and other low-power digital devices, as well as in portable consumer electronics, automotive electronics, and industrial applications.

Electrical Characteristics:

• Output Current: 150mA (max)
• Dropout Voltage: 0.2V (typical at 150mA)
• Quiescent Current: 30µA (typical)
• Input Voltage Range: 2.5V to 16V
• Operating Temperature Range: -40°C to +125°C

Conclusion:

The LP3985IM5-3.3/NOPB from Texas Instruments is a highly efficient, low-dropout voltage regulator that is well-suited for a variety of low-power applications. Its combination of low quiescent current, thermal protection, and compact packaging makes it an excellent choice for designers looking to optimize performance while minimizing space and power consumption in their electronic designs.