TPA2005D1DRBR (Texas Instruments) is a 1.4 W high-efficiency, filter-free class-D audio power amplifier that needs only three external components, in an 8-pin package (DRB, 3 mm × 3 mm).
1.4 W into 8 Ω from a 5 V supply at THD = 10% (typ) · 2.5 V to 5.5 V supply range
84% efficiency at 400 mW with an 8-Ω speaker · 2.8 mA quiescent current · 0.5 µA shutdown current
−71 dB PSRR at 217 Hz · internally generated 250 kHz switching frequency · fast 9 ms start-up
