Texas Instruments

LM4673SD/NOPB

LM4673SD/NOPB Description

The LM4673SD/NOPB from Texas Instruments is a high-efficiency, mono Class D audio amplifier designed for portable and space-constrained applications. Part of the Boomer® and PowerWise® series, it delivers 2.65W of output power into a 4Ω load with a supply voltage range of 2.4V to 5.5V, making it ideal for battery-powered devices. The amplifier is housed in an 8-pin WSON package with surface-mount compatibility, ensuring compact PCB integration. It complies with ROHS3 and REACH environmental standards and is classified under ECCN EAR99, suitable for global export.

LM4673SD/NOPB Features

• High Efficiency: Class D architecture minimizes power dissipation, extending battery life in portable applications.
• Wide Voltage Range (2.4V–5.5V): Supports operation from single-cell Li-ion batteries or regulated 3.3V/5V supplies.
• Low Noise and THD: Ensures high-fidelity audio reproduction for consumer electronics.
• Surface-Mount Design (8-WSON): Compact footprint ideal for space-constrained designs.
• Robust Protection: Built-in thermal shutdown and short-circuit protection enhance reliability.
• MSL1 (Unlimited): Moisture-resistant packaging simplifies storage and handling.

LM4673SD/NOPB Applications

The LM4673SD/NOPB excels in portable audio systems, including:

• Smartphones and Tablets: Efficient amplification for speakers and headphones.
• Bluetooth® Speakers: Compact, high-power audio output with minimal heat generation.
• Gaming Consoles: Low-latency, high-quality sound for immersive experiences.
• IoT Devices: Energy-efficient audio for smart home gadgets like voice assistants.
• Medical Alert Systems: Reliable performance in critical audio notification applications.

Conclusion of LM4673SD/NOPB

The LM4673SD/NOPB stands out as a high-performance, energy-efficient Class D amplifier tailored for modern portable electronics. Its low power consumption, compact form factor, and robust protection features make it a superior choice over traditional Class AB amplifiers. Whether for consumer audio, IoT, or medical devices, this IC delivers crisp, clear sound with minimal design complexity, aligning with Texas Instruments' reputation for innovation in audio amplification.