The Maxim Integrated MAX9750BEUI is a Class AB stereo audio power amplifier from the DirectDrive® series. It delivers 2.6W per channel into a 3 Ω load, runs from a single 4.5 V to 5.5 V supply, and operates over the -40°C to 85°C industrial temperature range. The 28-TSSOP package integrates a stereo speaker channel plus a separate stereo headphone output, making it a single-IC audio solution for multimedia docks, portable speakers, automotive infotainment head units, and industrial panel audio.
Output power and load matching
The headline rating is 2.6W per channel into 3 Ω. That figure sets the minimum speaker impedance for full output.
The 28-TSSOP package is surface-mount, so reflow soldering is standard; the industrial temperature rating means the silicon is specced for the full range without derating output power at the hot end.