Texas Instruments

LM4670SD

LM4670SD Description

The LM4670SD is a monolithic Class D audio amplifier from Texas Instruments, designed to deliver exceptional performance in a compact and efficient package. This device is part of the renowned Boomer® series, known for its high-quality audio output and reliability. The LM4670SD is capable of delivering a maximum output power of 3W into a 4-ohm load, making it suitable for a wide range of audio applications. It operates from a supply voltage range of 2.4V to 5.5V, providing flexibility in power supply options.

The LM4670SD features a surface-mount package, specifically the -8lead WSON (Tape & Reel), which is ideal for space-constrained designs. Despite its small form factor, the amplifier maintains high performance and efficiency. The device is classified under the ECCN code EAR99 and is REACH unaffected, ensuring compliance with international regulations. The moisture sensitivity level (MSL) is rated at 1 (Unlimited), making it suitable for a variety of manufacturing environments.

LM4670SD Features

• High Efficiency: The Class D architecture of the LM4670SD ensures high efficiency, minimizing power consumption and heat generation. This makes it ideal for battery-powered and portable audio applications.
• Wide Supply Voltage Range: With a supply voltage range of 2.4V to 5.5V, the LM4670SD can be powered from a variety of sources, including single-cell Li-ion batteries and standard 5V supplies.
• Compact Surface-Mount Package: The 8-lead WSON package is designed for easy integration into compact designs, reducing board space and simplifying assembly processes.
• High Output Power: Capable of delivering up to 3W into a 4-ohm load, the LM4670SD provides ample power for driving speakers in various audio systems.
• Compliance and Safety: The device is classified under ECCN code EAR99 and is REACH unaffected, ensuring compliance with international regulations. The MSL rating of 1 (Unlimited) makes it suitable for a variety of manufacturing environments.
• Ease of Use: The LM4670SD is designed to be easy to use, with minimal external components required for operation. This simplifies the design process and reduces overall system cost.

LM4670SD Applications

The LM4670SD is well-suited for a variety of applications where high-quality audio output and compact design are critical. Some specific use cases include:

• Portable Audio Devices: Ideal for battery-powered devices such as portable speakers, Bluetooth speakers, and smart speakers, where high efficiency and compact size are essential.
• Consumer Electronics: Suitable for applications in consumer electronics such as tablets, e-readers, and smart home devices, where space is limited and audio quality is important.
• Automotive Applications: Given its wide supply voltage range and high efficiency, the LM4670SD can be used in automotive infotainment systems, providing reliable audio output without significant power consumption.
• Industrial Equipment: For industrial applications requiring compact and efficient audio solutions, such as control panels and monitoring systems.

Conclusion of LM4670SD

The LM4670SD from Texas Instruments is a versatile and efficient Class D audio amplifier that offers high performance in a compact package. Its wide supply voltage range, high output power, and compliance with international regulations make it suitable for a variety of applications. Despite its small form factor, the LM4670SD delivers exceptional audio quality and efficiency, making it an ideal choice for designers looking to integrate high-quality audio into their products. While the product is now obsolete, its legacy continues to influence the design of modern audio amplifiers.