XPT4068 is a dual-channel bridge audio power amplifier chip that can be powered by a DC power supply of 2.5V to 5.5V; it can provide 3W of power for a 4Ω load. In addition, when connected to a stereo headset, the chip can drive a stereo headset in a single-ended working mode.
The XPT4068 is a dual‑channel bridge audio power amplifier chip that operates from a 2.5 V‑5.5 V supply and can deliver up to 3 W into a 4 Ω load. It includes low‑power shutdown control, stereo headphone drive mode, and noise‑suppression features, making it suitable for mobile phones, PDAs, MP3/MP4 players and desktop audio equipment.
The manual provides a complete description of the chip’s functions, package options (QFN 3×3‑16L and SOP‑16), pin assignments, electrical limits, performance parameters, and typical application circuits. Design notes cover gain setting, power‑down control, bypass capacitors, and headphone‑control circuitry. This manual is written in Chinese.
| Supply voltage range | 2.5 V – 5.5 V |
|---|---|
| Output power (4 Ω load) | 3 W |
| Shutdown leakage current | < 1 µA |
| Output offset voltage | 20 mV |
The XPT4068 operates from a supply voltage of 2.5 V to 5.5 V.
At a 5 V supply the chip can deliver up to 3 W into a 4 Ω load.
The shutdown leakage current is less than 1 µA.
Applying about 4 V to the HP‑IN pin activates the headphone control circuit.