30 W per channel into 8 Ω — what the supply rail means
The TPA3128D2DAP is a Class D stereo audio amplifier from Texas Instruments rated for 30 W per channel into an 8 Ω load. The supply range is 4.5 V to 26 V.
Industrial temperature grade and package
Rated for -40°C to 85°C ambient, this part works in outdoor telecom enclosures, factory-floor audio zones, and automotive cabin systems. The package is 32-HTSSOP with an exposed pad.
Short-circuit protection built in
Short-circuit protection on the outputs is included — no external crowbar or fuse needed per channel. The chip folds back or shuts down on a fault; it auto-recovers when the fault clears. That saves a few components on the BOM and keeps the board clean for production.
Lifecycle and compliance
TI lists the TPA3128D2DAP as Active — no end-of-life notice, no last-time-buy window to watch. ROHS3 compliant, so it clears the EU and most global material restrictions without a waiver. No known second-source or pin-compatible alternate from another manufacturer; if you need dual sourcing, the closest functional match is another TI Class D in the same package family, but the pinout differs — verify before swapping.