Stereo Class D amp with I²C — what you get
The SSM2380CBZ-REEL7 from Analog Devices is a 2-channel (stereo) Class D audio amplifier delivering 3.2 W per channel into a 4 Ω load from a 2.5 V to 5.5 V supply. It integrates I²C volume control, depop circuitry, differential inputs, mute, and short-circuit plus thermal protection — all in a 16-bump WLCSP (1.96 x 1.96 mm).
3.2 W per channel — sizing the speaker load
The 3.2 W x 2 into 4 Ω rating sizes this part for small-to-medium speakers in battery-powered or space-constrained gear. Compare with the SSM2375CBZ-REEL7, a mono sibling that delivers 3.17 W into a single 4 Ω load.