Texas Instruments

LP2989IM-3.3  

Linear & Switching Voltage Regulators

LP2989IM-3.3 Description

The LP2989IM-3.3 is a micro power, low noise linear voltage regulator designed for applications requiring high efficiency and minimal power consumption. Manufactured by Texas Instruments, this regulator offers a fixed output voltage of 3.3V and is capable of delivering up to 500mA of output current. With a quiescent current of just 175 µA, the LP2989IM-3.3 is optimized for battery-powered and low-power applications, ensuring extended operational life and minimal energy waste.

The regulator features a maximum input voltage of 16V and a dropout voltage of 0.65V at 500mA, making it suitable for a wide range of input voltage sources. The LP2989IM-3.3 also boasts a high power supply rejection ratio (PSRR) of 60dB at 1kHz, effectively filtering out noise and ripple from the input supply, thus ensuring a clean and stable output voltage.

LP2989IM-3.3 Features

• Low Quiescent Current: With a quiescent current of only 175 µA, the LP2989IM-3.3 is highly efficient, making it ideal for battery-operated devices where power conservation is critical.
• High PSRR: The regulator offers a PSRR of 60dB at 1kHz, effectively reducing noise and ripple in the output voltage, ensuring stable and clean power supply.
• Fixed Output Voltage: The LP2989IM-3.3 provides a fixed output voltage of 3.3V, simplifying design and ensuring consistent performance.
• High Output Current: Capable of delivering up to 500mA of output current, the regulator can support a variety of high-current applications.
• Low Dropout Voltage: With a dropout voltage of 0.65V at 500mA, the LP2989IM-3.3 can operate efficiently even with low input-to-output voltage differentials.
• Enable Control Feature: The regulator includes an enable control feature, allowing for dynamic power management and further reducing power consumption when the regulator is not in use.
• Protection Features: The LP2989IM-3.3 includes over-current, over-temperature, and short-circuit protection, ensuring robust and reliable operation under various conditions.
• Surface Mount Packaging: The regulator is available in a surface mount package, facilitating easy integration into compact and high-density PCB designs.

LP2989IM-3.3 Applications

The LP2989IM-3.3 is well-suited for a variety of applications where low power consumption, high efficiency, and stable voltage regulation are essential. Some specific use cases include:

• Battery-Powered Devices: Ideal for portable electronics, such as smartphones, tablets, and IoT devices, where extended battery life and minimal power draw are crucial.
• Low-Power Systems: Suitable for embedded systems, microcontrollers, and other low-power applications that require stable and efficient power regulation.
• Noise-Sensitive Applications: Given its high PSRR, the LP2989IM-3.3 is perfect for applications such as audio equipment, precision instruments, and medical devices where low noise and ripple are critical.
• Industrial and Automotive: The regulator's robust protection features make it suitable for industrial and automotive applications where reliability and durability are paramount.

Conclusion of LP2989IM-3.3

The LP2989IM-3.3 from Texas Instruments is a highly efficient, low noise linear voltage regulator that offers significant advantages over similar models. Its low quiescent current, high PSRR, and fixed output voltage make it an ideal choice for a wide range of applications, particularly those requiring minimal power consumption and stable voltage regulation. With its robust protection features and surface mount packaging, the LP2989IM-3.3 ensures reliable performance and easy integration into modern electronic designs. Whether for battery-powered devices, low-power systems, or noise-sensitive applications, the LP2989IM-3.3 stands out as a reliable and efficient power solution.

LP2989IM-3.3 Documents

Download datasheets and manufacturer documentation for LP2989IM-3.3

Datasheets :

LP2989AIMMx-5.0/NOPB Datasheet