The LM4819LD from Texas Instruments is a compact, highly efficient audio power amplifier designed to meet the demanding requirements of portable electronic devices. This low-voltage audio power amplifier is capable of delivering 350mW of continuous average power to a 8Ω load with 0.1% (THD+N) from a 5V power supply, making it an ideal choice for applications where space and power efficiency are critical.

Key Features

• Power Output: Delivers 350mW of power into an 8Ω load, offering robust sound quality for its size.
• Efficiency: Operates on a supply voltage range from 2.7V to 5.5V, allowing for flexible integration into various circuit designs.
• Low Distortion: Maintains a low total harmonic distortion plus noise (THD+N) of 0.1%, ensuring high-fidelity audio playback.
• Boomer Audio Power: Part of TI's Boomer series, designed to provide high-quality audio amplification in portable devices.
• Shutdown Mode: Features a shutdown mode that reduces power consumption when not in use, contributing to the extended battery life of portable applications.
• Surface-Mount Package: Comes in a space-saving surface-mount package, ideal for compact electronic assemblies.

Applications

The LM4819LD is versatile and can be used in a wide range of audio applications. Its primary uses include portable electronic devices where power efficiency and space are at a premium. Examples include:

• Mobile Phones
• PDAs
• Laptop Computers
• Portable Media Players
• Handheld Gaming Devices

Technical Specifications

With its combination of power, efficiency, and audio fidelity, the LM4819LD from Texas Instruments stands out as a premier choice for designers looking to enhance the audio experience in their portable electronic products.