The MAX9738 Class G amplifier delivers a 16 V p‑p output swing from a single 2.7 V‑5.5 V supply while maintaining high efficiency and low battery drain. It incorporates a built‑in inverting boost converter capable of supplying up to 400 mA of peak current, enabling a constant output voltage as the battery voltage declines.
Designed for compact mobile applications, the device operates over –40 °C to +85 °C, features click‑and‑pop suppression, shutdown control, and soft‑start circuitry. Pin descriptions, electrical characteristics, and typical operating curves are provided for designers integrating the amplifier with ceramic or piezoelectric loudspeakers.
| Output Voltage Swing | 16 V p‑p |
|---|---|
| Peak Output Current | 400 mA |
| Operating Temperature Range | -40 °C – +85 °C |
It can supply up to 400 mA of peak output current.
It is optimized for ceramic or piezoelectric loudspeakers.