The TPA6100A2DGK is a Class AB stereo headphone amplifier delivering 50 mW per channel into a 16 Ω load.
Protection and shutdown — what the features actually do
Depop circuitry suppresses the audible pop when the amplifier is enabled or disabled — a detail that matters if the output is driving sensitive headphones in a consumer product. Short-circuit and thermal protection guard the output stage against a faulted load or a stalled speaker coil. A shutdown pin lets the system microcontroller cut the amplifier bias when audio is idle, saving battery current. These three features together mean the part can be left on the board without an external muting relay or series resistor.