Texas Instruments

LM4990LD/NOPB

LM4990LD/NOPB Description

The LM4990LD/NOPB is a monolithic Class AB audio power amplifier from Texas Instruments, part of the Boomer® series. This IC is designed to deliver a maximum output power of 2W into a 4-ohm load, making it suitable for a variety of audio applications. It operates over a wide supply voltage range of 2.2V to 5.5V, ensuring flexibility in power supply requirements. The LM4990LD/NOPB is available in a surface-mount package, specifically in a Tape & Reel (TR) format, which is ideal for automated assembly processes. This product is REACH unaffected and RoHS3 compliant, adhering to stringent environmental regulations. It also features a moisture sensitivity level (MSL) of 3, allowing for 168 hours of exposure before assembly.

LM4990LD/NOPB Features

The LM4990LD/NOPB offers several unique features that enhance its performance and usability:

• Depop and Shutdown Features: These features help reduce power consumption and minimize unwanted noise during startup and shutdown, ensuring a clean audio output.
• Wide Supply Voltage Range: The ability to operate from 2.2V to 5.5V makes it versatile for various power supply configurations.
• Surface-Mount Packaging: The Tape & Reel (TR) package format is suitable for high-volume production and automated assembly lines.
• Environmental Compliance: The LM4990LD/NOPB is REACH unaffected and RoHS3 compliant, ensuring it meets global environmental standards.
• Moisture Sensitivity Level 3: This allows for up to 168 hours of exposure before assembly, providing flexibility in manufacturing processes.

LM4990LD/NOPB Applications

The LM4990LD/NOPB is well-suited for a range of applications where high-quality audio output and efficient power management are required:

• Portable Audio Devices: Ideal for portable media players, smartphones, and tablets where space and power efficiency are critical.
• Audio Amplifiers: Suitable for compact audio systems, such as portable speakers and Bluetooth audio devices.
• Consumer Electronics: Can be used in various consumer electronics where a reliable and efficient audio solution is needed.
• Industrial Applications: The robust design and environmental compliance make it suitable for industrial applications where durability and compliance are essential.

Conclusion of LM4990LD/NOPB

The LM4990LD/NOPB from Texas Instruments is a versatile and efficient Class AB audio power amplifier. Its wide supply voltage range, surface-mount packaging, and environmental compliance make it a reliable choice for a variety of applications. The depop and shutdown features ensure clean audio output and reduced power consumption, enhancing overall performance. While the product is now obsolete, it remains a valuable option for existing designs and applications where its unique features and performance benefits are required.