MAX98374EFF+ developed by Maxim Integrated is a type of a high-efficiency, digital input Class D speaker amplifier with dynamic headroom tracking (DHT) and brownout protection. DHT ensures the headroom available to the Class D amplifier so as to achieve a consistent listening experience when the power-supply voltage varies due to sudden transients and declining battery life. In the case of thermal limits reached, it is able to deliver thermal foldback protection to maintain robust behavior.