PAM8403 USB Power Class D Amplifier
PAM8403 USB Power Class D অ্যামপ্লিফায়ার
The board adopts the PAM8403 typical circuit design, the use of MICRO USB power supply (reserved welding wire interface), is very convenient to use universal mobile phone charger for the power supply, resistance container parts adopt standardized SMT process, simple and stable design special interface for bluetooth audio receiver module, can easily DIY little bluetooth speakers the board can pick up 8 ohm 4 ohm small speakers, suitable for all frequency horn or full frequency small speakers.
1. Working voltage: 2.5v-5.5V. Note: The power supply voltage should not exceed 5.5V, the power supply plus and minus.
2. Horn with: 4-8 euro, recommended: 4 Euro; speaker Power: 2-8w.
3. Can use the computer USB port 5V power supply, or uses the handset charger USB port 5V power supply, also may use the lithium battery power supply.
4. High efficiency 90%, 4ω load and 5V power supply condition, can provide 3W (left channel) +3w (right channel) output power. Class A, class B
