SSM2317

Filterless High Efficiency Mono 3 W Class-D Audio Amplifier SSM2317 FEATURES Filterless Class-D amplifier with Σ-Δ modulation Automatic level control (ALC) improves dynamic range and prevents clipping 3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with <10% total harmonic distortion (ALC off) 700 mW into 8 Ω load at 4.2 V supply (ALC 80%) 93% efficiency at 5.0 V, 1.4 W into 8 Ω speaker >93 dB signal-to-noise ratio (SNR) Single-supply operation from 2.5 V to 5.5 V 20 nA ultralow shutdown current Short-circuit and thermal protection Available in 9-ball, 1.5 mm × 1.5 mm WLCSP Pop-and-click suppression Built-in resistors reduce board component count Default fixed 18 dB or user-adjustable gain setting APPLICATIONS Mobile phones MP3 players Portable gaming Portable electronics Educational toys GENERAL DESCRIPTION The SSM2317 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application...