The TPA3117D2 is a 15W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard™ speaker protection circuitry includes an adjustable power limiter. The adjustable power limiter allows the user to set a "virtual" voltage rail lower than the chip supply to limit the amount of current through the speaker.
The TPA3117D2 can drive stereo speakers as low as 4
. The high efficiency of the TPA3117D2, 90%, eliminates the need for an external heat sink when playing music.
The outputs are also fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.
SpeakerGuard is a trademark of Texas Instruments.
| Audio input type | Analog Input |
| Architecture | Class-D |
| Speaker channels (max) | Stereo |
| Rating | Catalog |
| Power stage supply (max) (V) | 26 |
| Power stage supply (min) (V) | 8 |
| Load (min) (Ω) | 4 |
| Output power (W) | 15 |
| SNR (dB) | 102 |
| THD + N at 1 kHz (%) | 0.1 |
| Iq (typ) (mA) | 10 |
| Control interface | Hardware |
| Analog supply (min) (V) | 8 |
| Analog supply voltage (max) (V) | 26 |
| PSRR (dB) | 72 |
| Operating temperature range (°C) | -40 to 85 |
| VQFN (RHB) | 32 | 25 mm² 5 x 5 |
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