PAM8403 Audio Amplifier With Volume Control

PAM8403 Audio Amplifier With Volume Control

The PAM8403 Audio Amplifier with Volume Control is a compact, high-efficiency stereo amplifier module designed for portable and embedded audio applications. It is built around the PAM8403 Class D amplifier chip, capable of delivering up to 3W per channel into 4Ω speakers at a 5V supply. The module features an integrated volume control potentiometer, which allows users to adjust audio levels easily and, in some designs, serves as a power switch when turned fully counter-clockwise. Operating within a voltage range of 2.5V to 5.5V, the module is well-suited for battery-powered devices, DIY audio projects, and smart electronics requiring high-quality sound in a small footprint. Its filter less design and built-in protections make it a reliable choice for various applications.

Features:

• High Efficiency Up to 90% efficiency with low quiescent current.
• Filterless Design Directly drives speakers without LC filters.
• Volume Control Integrated potentiometer for easy audio level adjustment.
• Wide Voltage Range Operates at 2.5V–5.5V Dc.
• Protection Features Short-circuit and thermal shutdown protection.

Specifications:

Note:

• Input audio should be via shielded wire for best performance.
• Use a proper filtered power supply with good filter capacitors.
• Take care not to short speaker wires else IC will get damaged.
• Make sure the power supply never exceeds 5.5V else IC will get damaged. Use a regulated power supply.

Pin Configuration:

Package Includes:

• 1 x PAM8403 Audio Amplifier Module with Volume Control.

Data Sheet:

PAM8403