GENERAL DESCRIPTION
The SSM2377 is a fully integrated, high efficiency, Class-D audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum of external components and operates from a single 2.5 V to 5.5 V supply. It is capable of delivering 2.5 W of continuous output power with <1% THD + N driving a 4 Ω load from a 5.0 V supply.

FEATURES
   Filterless, Class-D amplifier with spread-spectrum
      Σ-Δ modulation
   2.5 W into 4 Ω load and 1.4 W into 8 Ω load at 5.0 V supply
      with <1% total harmonic distortion plus noise (THD + N)
   92% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
   >100 dB signal-to-noise ratio (SNR)
   High PSRR at 217 Hz: 80 dB
   Ultralow EMI emissions
   Single-supply operation from 2.5 V to 5.5 V
   Gain select function: 6 dB or 12 dB
   Fixed input impedance of 80 kΩ
   100 nA shutdown current
   Short-circuit and thermal protection with autorecovery
   Available in a 9-ball, 1.2 mm × 1.2 mm WLCSP
   Pop-and-click suppression

APPLICATIONS
   Mobile phones
   MP3 players
   Portable electronics