Output power — what the numbers mean for the BOM
The TPA6130A2RTJT: The 290 mW single-channel figure at 16 Ω is the headline number, but the real-world stereo output is 138 mW per channel into the same load.
I²C volume control and depop — why they matter
The I²C interface lets the host processor set the gain digitally, which saves an external potentiometer and keeps the volume steps repeatable across units. The depop circuit suppresses the audible click when the amp powers up or switches modes — a common complaint on cheaper headphone drivers. The mute and shutdown pins give the system designer a clean way to silence the output during power sequencing or fault conditions without adding a relay.
Protection and thermal management
Short-circuit and thermal protection are built in, so a miswired headphone jack or a stalled output won't kill the chip immediately. The exposed pad on the 20-QFN needs a solid thermal via pattern to the ground plane to keep the die temperature within the -40°C to 85°C operating range. Without that, the thermal foldback will throttle the output power before you reach the rated 290 mW.
Lifecycle and sourcing
The TPA6130A2RTJT carries an active lifecycle status. It is available through independent distribution and quoted to order against an RFQ. Volume pricing and current lead time are confirmed at quote time.