The product is a single-channel 3W D-class audio amplifier with ultra-high efficiency and ultra-low power consumption, supporting 3Ω and 8Ω loads, and can be applied to mobile phones, MP3 players, portable gaming consoles, portable electronic devices and other fields
The SSM2319 is a fully integrated Class‑D audio amplifier designed for mobile‑phone and portable‑electronics applications. It operates from a single 2.5 V to 5.5 V supply and provides up to 3 W continuous output power with 90 % efficiency and less than 1 % total harmonic distortion.
Key features include filter‑less operation, spread‑spectrum Σ‑Δ modulation, built‑in pop‑and‑click suppression, short‑circuit and thermal protection, and a default 12 dB gain that can be adjusted with external resistors. The device is offered in a 9‑ball 1.5 mm × 1.5 mm wafer‑level chip‑scale package.
| Output Power (3 Ω load) | 3 W |
|---|---|
| Efficiency at 5 V | 90 % |
| Total Harmonic Distortion (THD) | <1 % (typical) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Signal‑to‑Noise Ratio | 98 dB |
| Shutdown Current | 20 nA |
| Gain | 12 dB (default) |
It operates from a single supply of 2.5 V to 5.5 V.
The shutdown current is typically 20 nA.
It can deliver up to 3 W of continuous output power into a 3 Ω load.
The device achieves 90 % efficiency at a 5 V supply.