The MAX9791AETI+: The Class D architecture keeps efficiency high and heat dissipation low, which matters when the 28-TQFN (5x5 mm) exposed pad is the only thermal path. The integrated LDO and depop circuitry simplify the audio rail design and suppress turn-on clicks without external muting FETs.
Output topology — stereo speakers, headphones, and subwoofer on one die
The output type is 2-Channel (Stereo) with Stereo Headphones and Subwoofer, integrating three amplifier stages: a stereo speaker pair, a stereo headphone pair, and a mono subwoofer channel.
Protection features and supply range
On-chip short-circuit and thermal protection guard against output faults and over-temperature events, while the shutdown pin allows the amplifier to be put into a low-power state.