35W mono or 17.5W stereo — the output power decision
The MAX9736AETJ+T is a Class D audio amplifier from Maxim Integrated that delivers 35W into a 4Ω load in mono mode, or 17.5W per channel into 8Ω loads in stereo mode. This output power range targets powered speakers, soundbars, subwoofer plates, and commercial audio systems where efficiency matters — Class D keeps heat dissipation low enough for the 32-TQFN package with exposed pad.
Supply range and protection features
Operating from 8V to 28V, the amplifier works with common unregulated or regulated supply rails — 12V, 18V, or 24V bricks are all in range. On-chip short-circuit and thermal protection, plus depop and mute, simplify the system design: no external muting relay or separate protection supervisor needed.
Package and mounting for layout planning
Housed in a 32-WQFN with exposed pad (supplier package 32-TQFN 7x7 mm), the part is surface-mount only. The exposed pad must be soldered to a thermal land on the PCB — the datasheet layout recommendation should be followed for adequate heat spreading, especially when driving 35W continuous.
Temperature grade and environment
Rated for -40°C to 85°C ambient, the MAX9736AETJ+T suits indoor consumer electronics and commercial audio gear. It is not automotive-qualified (no AEC-Q100 cited), so it fits home theater, pro audio racks, and public-address systems rather than under-hood or cabin audio.