The LM4863 is a stereo audio amplifier designed by UTC (Unisonic Technologies Co., Ltd.). It's capable of delivering 2.2W per channel into a 4Ω load, making it suitable for portable audio devices and low-power stereo applications. The LM4863 incorporates features like shutdown mode and external gain setting for flexible configuration.

Applications

• Portable Audio Devices: Used in MP3 players, portable CD players, and other handheld audio devices.
• Laptop Computers: Employed in laptop and notebook computers for stereo audio output.
• Multimedia Speakers: Found in small multimedia speaker systems.
• Gaming Consoles: Used in portable gaming consoles for audio amplification.
• Cell Phones: Employed in cellular phones for hands-free audio output.

Features

• Stereo Audio Amplifier: Provides two channels of audio amplification.
• 2.2W Output Power: Delivers 2.2W per channel into a 4Ω load.
• Low THD+N: Offers low total harmonic distortion plus noise for high-quality audio.
• Shutdown Mode: Features a shutdown mode for reducing power consumption.
• External Gain Setting: Allows for external gain adjustment.

Benefits

• High-Quality Audio: Delivers clear and accurate audio reproduction.
• Efficient Power Usage: Provides efficient amplification for portable applications.
• Low Power Consumption: Shutdown mode helps conserve battery power.
• Flexible Configuration: External gain setting allows for customized amplification.
• Compact Design: Suitable for small and portable devices.

Additional Details

The LM4863 is typically available in a DIP (Dual In-line Package) or SOP (Small Outline Package). It requires a minimal number of external components, simplifying circuit design. The supply voltage range is typically between 2.5V and 5.5V. The thermal shutdown protection prevents the device from overheating. The device is commonly used in various consumer electronics devices. Datasheets provide detailed information on electrical characteristics, application circuits, and package dimensions. The operating temperature range is usually -40°C to +85°C.