National Semiconductor Tariff Inquiry

LM4670SD

LM4670SD Description

The LM4670SD is a high-performance, single-channel Class D audio amplifier designed for applications requiring efficient power delivery and high audio quality. Manufactured by National Semiconductor, this amplifier belongs to the renowned Boomer® series and is optimized for surface mount applications. It delivers a maximum output power of 3W per channel into a 4Ω load, making it suitable for a wide range of audio applications.

Key specifications of the LM4670SD include a supply voltage range of 2.4V to 5.5V, ensuring compatibility with various power sources. The device is REACH affected, indicating compliance with environmental regulations. Packaged in bulk, the LM4670SD has a moisture sensitivity level (MSL) of 1, which means it is suitable for unlimited storage and handling without additional moisture protection.

LM4670SD Features

The LM4670SD offers several unique features that set it apart from similar models:

1. High Efficiency: As a Class D amplifier, the LM4670SD provides high efficiency, which translates to longer battery life and less heat generation compared to traditional Class AB amplifiers. This makes it ideal for portable and battery-powered devices.

2. Wide Supply Voltage Range: The ability to operate from 2.4V to 5.5V supply voltage ensures compatibility with a variety of power sources, including single-cell Li-ion batteries and multi-cell alkaline batteries.

3. Low Distortion and Noise: The LM4670SD is designed to deliver high-fidelity audio with low distortion and noise levels, ensuring clear and crisp sound quality. This is particularly beneficial in applications where audio clarity is critical.

4. Surface Mount Compatibility: The surface mount design allows for easy integration into compact and space-constrained systems, making it suitable for modern electronic devices.

5. Compliance and Packaging: The REACH Affected status indicates compliance with environmental regulations, while the bulk packaging and MSL 1 rating ensure ease of handling and storage.

LM4670SD Applications

The LM4670SD is ideal for a variety of applications where high audio quality and efficient power delivery are essential. Some specific use cases include:

1. Portable Audio Devices: The LM4670SD is well-suited for portable audio applications such as MP3 players, smartphones, and tablets, where battery life and compact design are critical.

2. Consumer Electronics: It can be used in consumer electronics like smart speakers, soundbars, and portable Bluetooth speakers, where high-fidelity audio and efficient power usage are required.

3. Automotive Audio Systems: The LM4670SD can be integrated into automotive audio systems, providing high-quality sound while minimizing power consumption and heat generation.

4. Industrial Applications: In industrial settings, the LM4670SD can be used for audio alerts and communication systems, ensuring clear and reliable audio performance.

Conclusion of LM4670SD

The LM4670SD is a versatile and high-performance Class D audio amplifier that offers significant advantages over similar models. Its wide supply voltage range, high efficiency, low distortion, and surface mount compatibility make it an excellent choice for a variety of applications, from portable audio devices to automotive and industrial systems. The compliance with environmental regulations and ease of handling further enhance its appeal. For designers and engineers looking for a reliable and efficient audio solution, the LM4670SD is a standout option.