User manual for the Nsiway NS4146 3 W single‑channel Class‑D audio power amplifier with ultra‑low EMI and no output filter.
The NS4146 is a 3 W single‑channel Class‑D audio power amplifier designed for ultra‑low EMI performance without the need for an external output filter. It offers up to 90 % efficiency, built‑in over‑current, over‑temperature and undervoltage protection, and operates from a 2.2 V‑5.25 V supply.
The manual provides functional descriptions, key features, application areas (mobile phones, MP3 players, mini speakers, digital photo frames), typical application circuits, maximum ratings, electrical characteristics, pin assignments for the DFN(2×2)‑8 package, layout recommendations, and packaging details. This manual is written in Chinese.