Texas Instruments

LM4990LDX/NOPB

LM4990LDX/NOPB Description

The LM4990LDX/NOPB is a high-performance, monolithic Class AB audio power amplifier from Texas Instruments, part of the renowned Boomer® series. This device is designed to deliver exceptional audio quality and robust performance in a compact surface-mount package. It is capable of delivering a maximum output power of 2 watts into a 4-ohm load, making it suitable for a variety of audio applications. The LM4990LDX/NOPB operates over a wide supply voltage range of 2.2V to 5.5V, ensuring compatibility with a broad range of power supplies. This amplifier is housed in a 10-pin WSON package, which is available in tape and reel (TR) format, facilitating easy integration into modern electronic designs.

LM4990LDX/NOPB Features

The LM4990LDX/NOPB offers several unique features that set it apart from similar models in the market. Key features include:

• Depop and Shutdown: The amplifier incorporates depopulation (depop) and shutdown functionalities, which help reduce power consumption and minimize unwanted noise during startup and shutdown processes. This ensures a clean and quiet audio output, enhancing overall listening experience.
• Wide Supply Voltage Range: With a supply voltage range of 2.2V to 5.5V, the LM4990LDX/NOPB can be easily integrated into various systems without requiring complex power supply designs.
• Compliance and Safety: The device is REACH unaffected and RoHS3 compliant, ensuring it meets stringent environmental and safety standards. Additionally, it has a moisture sensitivity level (MSL) of 3, allowing for 168 hours of exposure, which is suitable for most manufacturing environments.
• ECCN and HTSUS: The LM4990LDX/NOPB is classified under ECCN EAR99 and HTSUS 8542.33.0001, facilitating compliance with international trade regulations.

LM4990LDX/NOPB Applications

The LM4990LDX/NOPB is ideal for a wide range of applications where high-quality audio output and efficient power management are critical. Specific use cases include:

• Portable Audio Devices: The amplifier's low power consumption and compact size make it suitable for portable audio devices such as smartphones, tablets, and portable speakers.
• Consumer Electronics: It can be used in various consumer electronics like TVs, soundbars, and home theater systems, where high-fidelity audio is essential.
• Automotive Audio Systems: The robustness and wide voltage range of the LM4990LDX/NOPB make it a reliable choice for automotive audio applications, where it can handle the varying power supply conditions in vehicles.
• Industrial Applications: In industrial settings, the amplifier can be used in communication systems, control panels, and other equipment where clear and reliable audio output is required.

Conclusion of LM4990LDX/NOPB

The LM4990LDX/NOPB from Texas Instruments is a versatile and high-performance Class AB audio power amplifier that offers significant advantages over similar models. Its wide supply voltage range, depop and shutdown features, and compliance with environmental and safety standards make it a reliable choice for a variety of applications. Although the product is now obsolete, it remains a testament to Texas Instruments' commitment to delivering high-quality audio solutions. For designers and engineers seeking a robust and efficient audio amplifier, the LM4990LDX/NOPB is a proven option that continues to meet the needs of modern electronic systems.