The MAX98300 is a mono 2.6W Class D amplifier that provides Class AB audio performance with Class D efficiency. It offers five selectable gain settings controlled by a single gain-select input. The device features active emissions-limiting edge-rate and overshoot control circuitry, reducing EMI. It also utilizes a patented filterless spread-spectrum modulation scheme, eliminating the need for output filtering found in traditional Class D devices. The MAX98300 has industry-leading low quiescent current of 0.78mA at 3.7V or 1.1mA at 5V, extending battery life in portable applications. It is available in an 8-pin TDFN-EP (2mm x 2mm x 0.8mm) and a 9-bump (1.2mm x 1.2mm) WLP package.
The MAX98300 mono Class D amplifier delivers 2.6 W into an 8 Ω load while consuming only 0.78 mA quiescent current at 3.7 V, extending battery life for portable audio devices. It offers five selectable gain settings (0 dB, 3 dB, 6 dB, 9 dB, 12 dB) and includes click‑and‑pop suppression, thermal and over‑current protection, and a low‑current shutdown mode.
The device is available in an 8‑pin TDFN‑EP (2 mm × 2 mm × 0.8 mm) and a 9‑bump WLP (1.2 mm × 1.2 mm) package, both rated for –40 °C to +85 °C operation. Key electrical specifications include a supply voltage range of 2.6 V–5.5 V, up to 1 W output power into 8 Ω, and up to 89 % efficiency with spread‑spectrum modulation for EMI reduction.
| Quiescent Supply Current (IDD) | 0.78 mA |
|---|---|
| Maximum Output Power | 1 W into 8 Ω at 1 kHz |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Options | 8‑pin TDFN‑EP (2 mm × 2 mm × 0.8 mm) and 9‑bump WLP (1.2 mm × 1.2 mm) |
The device draws 0.78 mA quiescent current at a 3.7 V supply.
The amplifier can deliver up to 1 W into an 8 Ω load at 1 kHz.
It is offered in an 8‑pin TDFN‑EP (2 mm × 2 mm × 0.8 mm) and a 9‑bump WLP (1.2 mm × 1.2 mm) package.