The TPA3101D2 is a high-efficiency, 10-W stereo Class-D audio power amplifier from TI that can drive 4-ohm speakers. It features 87% efficiency, operates from 10-26V, and has four selectable, fixed gain settings: 20, 26, 32, and 36 dB. The amplifier also has thermal and short-circuit protection, and an auto-recovery feature.
The TPA3101D2 is a 10‑W (per channel) Class‑D audio power amplifier designed for driving bridged‑tied stereo speakers. It operates from 10 V to 26 V, provides four selectable fixed gain settings (20, 26, 32, 36 dB) and achieves 87 % efficiency, eliminating the need for an external heat sink in typical use.
The device is supplied in 48‑pin QFN and HTQFP packages with an exposed thermal pad that must be soldered to a thermal plane. Absolute‑maximum ratings, recommended operating conditions, DC and AC characteristics, and detailed terminal functions are listed, along with typical performance graphs such as THD+N, output power versus supply voltage, and supply‑ripple rejection.
| Supply voltage range | 10 V – 26 V |
|---|---|
| Efficiency | 87 % |
| Gain settings | 20, 26, 32, 36 dB |
| THD+N (1 kHz, 10 W) | 0.09 % |
| Quiescent supply current (shutdown) | 22 – 26.5 mA |
It operates from 10 V to 26 V.
Four fixed gain settings are available: 20, 26, 32 and 36 dB.
No external heat sink is required for up to 10 W output because of its 87 % efficiency, but the exposed thermal pad must be connected to a thermal plane.
The amplifier includes short‑circuit protection, thermal protection with auto‑recovery, and a fault flag output.