PAM 8403 - 5v Digital Stereo Class-D Amplifier Board 2 Channel - PAM8403

The PAM8403 Digital Stereo Class-D Amplifier Board is a compact and energy-efficient audio amplifier module designed for small speaker applications. Operating on a low-voltage power supply (2.5V-5V), this amplifier delivers 3W per channel with an impressive 85% efficiency, making it ideal for portable and USB-powered audio projects.

Unlike traditional amplifiers, this Class-D module features a unique LC filter-free design, providing high-quality audio with low noise suppression. Its ability to directly drive 4Ω or 8Ω small speakers makes it perfect for DIY audio systems, embedded sound solutions, and battery-powered applications.

Key Features & Benefits

• Dual-Channel Stereo Output: 3W + 3W power output for high-quality audio.

• Low Voltage Operation: Works with 2.5V-5V power supply, including USB power.

• High Efficiency: 85% amplification efficiency for energy-saving performance.

• LC Filter-Free Design: Delivers clean sound without additional components.

• Compact Size: Ideal for portable and embedded audio applications.

Specifications

• Brand: [Brand]

• Model: PAM8403

• Input Voltage: 2.5V-5V DC

• Working Mode: Class-D (PWM modulation type)

• Output Power: 3W + 3W (Stereo)

• Impedance Support: 4Ω / 8Ω speakers

• Efficiency: 85%

• Board Dimensions: 21mm x 18mm x 2.6mm

Applications

• USB-powered mini audio systems

• Portable speakers and DIY music projects

• Embedded sound modules for toys and gadgets

• Battery-powered amplification solutions

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