About this product
With MagnetNo
With BatteryNo
Warranty TypeSupplier Warranty
Product description
MINI DIGITAL POWER AMPLIFIER BOARD, PAM8403 5V STEREO 2x3W Class D 2.5-5V
👉The rated working voltage is 2.5V - 5V, and the limit working voltage is 5.5V.
👉Ultra Mini Size: 21 x 18 x 3.4mm(L x W x H). Various digital products can be easily placed in a small space for efficient amplification; double-sided wiring can properly solve the wiring caused by potential balance and crosstalk between channels
👉Two-channel stereo, 5V power supply can output 3W+3W power, can directly drive 4Ω, 8Ω small speakers, the output power is large, the energy is sufficient, and the sound quality is good.
👉Excellent noise suppression, no audio input with ears close to speakers, no noise can be heard; unique Class D digital powerless board with LC filter can be powered directly from the computer's USB.
👉Battery powered also available High efficiency: 90%
👉Can provide 3W (left channel) + 3W (right channel) output power under 4 loads and 5V power supply
👉The efficiency of class A and class B amplifiers is only about 30%, whereas Class D amplifiers are highly regarded today
👉Class D power amplifier is very efficient, does not affect the sound quality due to temperature, and does not add heat sinks,
takes up less space, and has a built-in noise reduction circuit on the power amplifier board.
👉No popping sound when power on/off
👉The module has short circuit current protection and over temperature protection
👉Can use the computer USB port 5V power supply or use the mobile phone charger USB port 5V power supply
👉For any DIY design that requires a miniature audio amplifier, especially battery powered portable and mobile applications such as:
-Portable DVD Players, Game Consoles
-Telephone / Speakerphone
The following may damage the IC.
👉The voltage wiring between the + and-poles is reversed.
👉The speaker connectors (+ / -), (-) are not grounded, so they should not be connected together.
👉Provide a voltage exceeding 5.5V. If an adapter is used, the voltage must be stable/given a stable voltage, IC 7805 or 5V Zener diode can be used.