2W per channel into 4 Ohm — 24-HTSSOP with exposed pad
The TPA0172PWP: The 2W per channel figure is the maximum output power into a 4 Ohm speaker — enough for portable speakers, docking stations, or headphone amplifiers where the load impedance is known and the supply rail is regulated. Without a proper thermal land, the device will hit its thermal shutdown threshold well before reaching the rated output power.
Industrial temp range and feature set
The industrial temperature grade means the amplifier's bias and output offset stay within spec across the full range. The integrated feature set includes depop circuitry to suppress turn-on clicks, differential inputs for noise rejection, an I²C control interface for volume and mute, an input multiplexer to select between multiple audio sources, and a shutdown pin to drop quiescent current when the amplifier is idle. The mute function lets the output stage stay biased while the audio path is gated — useful for sequenced power-up in multi-amplifier systems.