The IRS20957STRPBF is a Class D Audio Amplifier Driver IC manufactured by Infineon. It features an integrated bridge driver, adjustable gain, and integrated over-current protection. It has a high-efficiency output driver and can drive up to 50W of audio power into 4-ohm and 8-ohm loudspeaker systems. The device also features built-in audible clicks and pops suppression, full click-and-pop suppression, and the ability to operate at any supply voltage from 2.2V to 19V. The integrated gain adjust feature enables precise level setting of the output level with no external components. The IRS20957STRPBF is an ideal IC for powering a wide range of portable audio applications.