What this part is and where it fits
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.
Temperature grade and environment
Rated for -40°C to 85°C ambient, this part suits outdoor telecom enclosures, automotive cabin audio, and factory-floor sound systems where the enclosure sees temperature swings. 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.
Lifecycle and sourcing
The MAX9750BEUI carries an Active lifecycle status — no end-of-life notice, no last-time-buy window. It is sourced through independent distribution and quoted to order against an RFQ.