The TPA3100D2 is a 20-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3100D2 can drive stereo speakers as low as 4Ω with a high efficiency of 92%, eliminating the need for an external heat sink. The gain of the amplifier is controlled by two gain select pins, with gain selections of 20, 26, 32, and 36 dB. The outputs are fully protected against shorts to GND, VCC, and output-to-output shorts. It also features a clock output for synchronization with multiple Class-D devices.
The TPA3100D2 is a 20‑W per‑channel Class‑D audio power amplifier designed for driving bridged‑tied stereo speakers from 10 V to 26 V supplies. It offers 92% efficiency, differential inputs, four selectable fixed gain settings, and built‑in thermal and short‑circuit protection.
Key specifications include 20 W output into an 8 Ω load at 18 V, four gain options (20, 26, 32, 36 dB), and two surface‑mount package options: a 48‑pin QFN (7 mm × 7 mm) and a 48‑pin HTQFP (9 mm × 9 mm). The datasheet also contains detailed absolute‑maximum ratings, DC/AC characteristics, terminal functions, and performance graphs.
| Output power per channel | 20 W into 8 Ω at 18 V |
|---|---|
| Efficiency | 92 % |
| Protection features | Thermal and short‑circuit protection |
| Package options | 48‑pin QFN (7 mm × 7 mm) or 48‑pin HTQFP (9 mm × 9 mm) |
It provides thermal and short‑circuit protection.
The amplifier is available in a 48‑pin QFN (7 mm × 7 mm) or a 48‑pin HTQFP (9 mm × 9 mm) package.