LP2989AIMX-3.3/NOPB

LP2989AIMX-3.3/NOPB Application Field and Working Principle

LP2989AIMX-3.3/NOPB is a low-drop and low-noise linear voltage regulator with ultra-low output noise, making it ideal for all types of audio applications. This voltage regulator comes in an 8-pin MSOP package and is drop-in compatible with the LM2989 low-dropout voltage regulator. The LP2989AIMX-3.3 is available in an extended temperature range from -40°C to +125°C for cost-critical applications in industrial and automotive designs.

Application fields:

• Medical devices
• Industrial applications
• Telecommunications
• Computer peripherals
• Consumer electronics
• Automotive applications

LP2989AIMX-3.3/NOPB Features:

• Low dropout voltage of 0.3V into a 1mA load current.
• Ultra low output noise of 40µVRMS over the entire 8Hz - 200kHz Bandwidth.
• Fast transient response.
• Low quiescent current of only 1.28mA.
• Input overvoltage protection capability.

LP2989AIMX-3.3/NOPB Working Principles:

The LP2989AIMX-3.3/NOPB is a traditional linear voltage regulator that operates at a fixed output voltage. It consists of a power transistor, an error amplifier, and a temperature compensator. The error amplifier compares the voltage at the output to a reference voltage (typically 1.25V or 2.5V) and generates an error signal. This signal is then used to control the power transistor, which regulates the current flowing through the load by varying its resistance. This helps to accurately maintain the output voltage at the set level.

The LP2989AIMX-3.3/NOPB also features temperature compensation, which compensates for variations in output voltage due to temperature changes. The regulator is designed to reduce the output voltage as the temperature increases and to increase it as the temperature decreases. This helps to keep the regulated output voltage at the set level over a wide temperature range.

The LP2989AIMX-3.3/NOPB is an ideal solution for cost-effective low-power applications, such as audio amplifiers, LED drivers, and other consumer electronics. Its low dropout voltage and ultra-low output noise make it well suited for audio applications. It is drop-in compatible with the LM2989 and is available in an Extended Temperature Range (ETR) to meet the requirements of industrial and automotive applications.

Conclusion:

The LP2989AIMX-3.3/NOPB is a low-drop, low-noise linear voltage regulator with ultra-low output noise, making it ideal for all types of audio applications. Its low dropout voltage, ultra-low output noise, and temperature compensation features make it well suited for noise-sensitive applications. Additionally, it is drop-in compatible with the LM2989 and is available in an Extended Temperature Range (ETR) for industrial and automotive applications.