2.8W stereo into 3Ω — what that means for the BOM
The TPA6020A2RGWR is a Class AB stereo amplifier from Texas Instruments that delivers 2.8W per channel into a 3Ω load. That power level suits portable speakers, docking stations, and small-format audio gear where the speaker impedance drops to 3Ω and you need clean audio without a heatsink — the exposed pad on the 20-VQFN (5x5mm) handles the thermal dissipation. Supply range from 2.5V to 5.5V means it runs off a single Li-ion cell (3.6V nominal) or a regulated 5V rail, so the same part fits battery-portable and USB-powered designs.
Differential inputs and shutdown
Differential inputs reject common-mode noise picked up on long audio input traces — useful when the amp sits near a switching regulator or digital processor on the same board. The shutdown pin lets a GPIO or power-management IC pull the amp into low-power idle, extending battery run time between audio bursts. Thermal protection cycles the output if the die temperature climbs past the trip point, so a stalled speaker or blocked vent doesn't kill the part.
Active production, no obsolescence pressure
The TPA6020A2RGWR carries an Active product status — TI is still manufacturing this line, no last-time-buy notice, no end-of-life window. ROHS3 compliant, so it passes current EU and Asian material restrictions without an exemption hunt. For a BOM line that needs a known-good audio amp with stable supply, this part isn't a sourcing risk.
Temperature grade and operating environment
Rated for -40°C to 85°C ambient — the industrial temperature range. That covers outdoor telecom enclosures, automotive cabin audio (non-under-hood), factory-floor sound systems, and any environment where the amp sees seasonal temperature swings or enclosure heat rise.