The SA51054 is a 22W, efficient Class-D audio Power amplifier for driving a bridged-tied mono speaker for automotive applications. It has I²C ports that can set gain, PWM switching frequency, Plimit voltage level and can acquire fault conditions of the device such as OT, OC, DC detect, UV, OV and Load diagnostics result. The high efficiency of the device eliminates the need for an external heat sink when playing music.