The TPA4860 is a 1-W mono audio power amplifier. The rated output power is 1W, and the distortion rate is 0.2%THD+N when the power supply is 5V. It supports 3.3V and 5V power supply. It adopts BTL connection mode, supports switch on and off control, headphone output, and does not require output coupling capacitors. It has thermal protection and short circuit protection.
The TPA4860 SLOS164B is a bridge‑tied‑load (BTL) audio power amplifier that delivers 1 W of continuous average power into an 8 Ω load with 0.4 % THD+N from a 5‑V supply. It offers 3.3‑V and 5‑V operation, no output coupling capacitors, shutdown control, headphone interface logic, and internal thermal and short‑circuit protection. Gain is set externally from 2 to 20 without compensation.
The device is supplied in a 16‑pin SOIC surface‑mount package, includes high power‑supply rejection (56 dB at 1 kHz), and features low quiescent currents (2.5 mA normal, 0.6 µA in shutdown). The datasheet lists absolute maximum ratings, recommended operating conditions, electrical characteristics, and typical performance graphs for designers.
| Output Power | 1 W into 8 Ω |
|---|---|
| Supply Voltage | 3.3 V or 5 V |
| Quiescent Current (normal mode) | 2.5 mA |
| Shutdown Current | 0.6 µA |
| Gain Range | 2 to 20 (uncompensated) |
| Total Harmonic Distortion (THD) | 0.2 % at 1 kHz, AV = 2 |
| Unity‑gain Bandwidth | 1.5 MHz |
The amplifier can deliver 1 W of continuous average power into an 8 Ω load.
It operates from either a 3.3 V or a 5 V supply.
The shutdown mode current is 0.6 µA.
THD is 0.2 % at 1 kHz with a gain of 2.