天玖隆代理龙鼎微20w单声道D类音频放大器PAM8320 The PAM8320 is an 20W efficient, Class-D audio power amplifier for driving a mono speaker in a bridge-tied-load configuration. The PAM8320 can drive speaker as low as 4Ω. Due to the low power dissipation and high efficiency, up to 95%, the device can be used without any external heat sink when playing music. The PAM8320 features short circuit protection, thermal shutdown, over voltage protection and under voltage lock-out. The PAM8320 features short circuit protection, thermal shutdown, over voltage protection and under voltage lock-out.