PAM8403 Ultra-Compact 2*3W Class D Digital Power Amplifier Board

Overview: The PAM8403 is a highly efficient, 2-channel stereo Class D digital power amplifier board, capable of delivering 3W+3W of power. Its ultra-miniature design, roughly the size of a coin (1.85 x 2.11 cm), makes it ideal for a wide range of applications, particularly in portable and digital devices.

Key Features:

• Superb Noise Suppression: No audible noise even when no audio input is present and the ear is close to the speaker.
• Power Supply Versatility: Can be powered by a computer's USB port, USB power banks, mobile phone chargers, or lithium batteries.
• High Efficiency: Up to 90%, capable of driving 4Ω or 8Ω small speakers.
• Output Power: Capable of delivering 3W (left channel) + 3W (right channel) with a 5V power supply.
• LC Filter-Free Design: Offers clear sound quality and high energy output.
• Dual-Sided PCB: Minimizes ground potential imbalance and crosstalk between channels.
• Machine Soldering: Ensures superior soldering quality over manual soldering.

Specifications:

• Model: PAM8403
• Operating Voltage: 2.5V-5.5V (Do not exceed 5.5V)
• Speaker Compatibility: 4-8 Ohms; recommended 4 Ohms
• Size: Ultra-small footprint, 1.85cm x 2.11cm
• Rated Working Voltage: 2.5-5V, limit working voltage 5.5V

Additional Information:

• Built-in Protection: Features short-circuit over-current protection and over-temperature protection (shuts down at 140°C ±15°C).
• Note: The negative outputs for the left and right channels should not be connected together to prevent damage to the IC.
• Applications: Suitable for LCD TVs, monitors, laptops, portable speakers, portable DVD players, gaming systems, phones/hands-free devices.
• Installation Caution: Connect speakers before powering on to avoid damage to the chip. Avoid excessive input audio signal to prevent signal clipping.

Package Contents:

• PAM8403 Class D Stereo Audio Power Amplifier Module (5 pieces)