Texas Instruments TPA2012D2RTJT, Class-D stereo audio amplifier, 2.1W x 2 @ 4Ω, 2.5V-5.5V supply, -40°C to 85°C, 20-WFQFN exposed pad, surface mount.
| Parameter | Value |
|---|---|
| Type | Class D |
| Output type | 2-Channel (Stereo) |
| Mounting | Surface Mount |
| Supply voltage | 2.5V ~ 5.5V |
| Max output power x channels @ load | 2.1W x 2 @ 4Ohm |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Features | Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Case | 20-WFQFN Exposed Pad |
At 2.1W per channel into 4Ω, this amplifier is sized for small speakers.
The shutdown pin lets a microcontroller or thermistor cut the output during overtemperature events, and the thermal protection circuit inside the die handles die-level faults before they reach the external shutdown.
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Yes, it is rated for 2.1W per channel into a 4Ω load, which is the standard impedance for small portable speakers.
The pinout is documented in the TI datasheet for the 20-QFN (4x4 mm) package. The exposed pad is the thermal and ground connection.