The NS4150B is an audio power amplifier from Nsiway, manufactured in an 8-pin, 0.5mm pitch MSOP-8 RoHS package. It is designed to provide Class-D amplification in applications such as active speakers, multimedia systems, and portable audio. The device boasts an output current of 8A with a large power bandwidth ranging from 200kHz to 1MHz. It operates from 4.5V to 24V and offers up to 86% efficiency. The amplifier also features mute circuitry, high-side diagnostics, thermal shutdown protection, and start-up mute functionality, as well as temperature and load dependent design. The NS4150B is ideal for high-power audio applications where cost savings, higher efficiency, and ease of design are required.