The LM4863LQ is a versatile audio amplifier integrated circuit from Texas Instruments, designed to deliver high-quality audio performance for a wide range of applications. This dual-channel amplifier is capable of driving up to 2.2 watts per channel into a 3Ω load, making it an excellent choice for portable and compact audio systems.

Key Features

• Output Power: The LM4863LQ can deliver 2.2W per channel into a 3Ω load with a 5V power supply, providing robust audio output for its size.
• Bridge-Tied Load (BTL) Configuration: This configuration allows for higher power output by driving the speakers with a differential signal, which can effectively double the output power compared to a single-ended configuration.
• Boomer Audio Power: As part of TI's Boomer series, the LM4863LQ is designed for high-quality audio applications, ensuring minimal distortion and high efficiency.
• Shutdown Mode: The device features a low-power shutdown mode, which significantly reduces power consumption when the amplifier is not in use.
• External Gain Configuration: Users can set the gain of the amplifier using external resistors, providing flexibility in the design of the audio system.
• Pop & Click Noise Reduction: The LM4863LQ includes circuitry to minimize pop and click noise during power cycling, ensuring a smooth listening experience.

Applications

The LM4863LQ is ideal for a variety of audio applications, including:

• Portable audio devices like MP3 players, mobile phones, and tablets
• Desktop and laptop computers
• Portable speakers and mini-component systems
• Personal digital assistants (PDAs)

Package and Quality

The LM4863LQ is offered in a compact 24-pin LLQFP (Low Profile Quad Flat Package) that is suitable for space-constrained applications. Texas Instruments is known for its commitment to quality, and the LM4863LQ is no exception, meeting high standards of performance and reliability.