The SIA9198 is a mono digital input Class D audio power amplifier;

The chip features a built-in 15V pre-charge adaptive boost converter, designed for efficiently driving small speakers to output high peak power. It supports a wide voltage supply from 2.1V to 9V and a maximum power of 12W.

The chip adopts a 1.8V Y-bridge output architecture, which maintains excellent efficiency even at low power, and significantly reduces the power consumption level during dynamic playback;

The chip integrates voltage and current detection functions to monitor the speaker's operating status in real time. Combined with multiple protections such as over-temperature, over-current, and under-voltage protection, it comprehensively ensures the safety of both the speaker and the chip.

The chip is packaged in a 36-ball WLCSP with a 0.35mm ball pitch and can operate stably over a wide temperature range of -40°C to +85°C.