Key facts
- Brand
- Maxim
- Model
- MAX98400B
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-07
Start here
Maxim MAX98400A/MAX98400B Class D Amplifier Datasheet
The MAX98400A/MAX98400B Class D amplifiers provide high‑performance, thermally efficient audio amplification. They operate from a single 8 V to 28 V supply, offer up to 90 % efficiency, and include integrated limiting, click‑and‑pop suppression, and robust over‑current protection.
Both devices are available in TQFN packages (36‑pin for MAX98400A, 24‑pin for MAX98400B) and are specified for the –40 °C to +85 °C temperature range. Thermal‑foldback can be enabled to reduce output power above +120 °C, and traditional thermal protection is also provided.
Maxim MAX98400B specifications
| Supply Voltage Range | 8 V to 28 V |
|---|---|
| Efficiency | up to 90 % |
| Power‑Supply Rejection Ratio (PSRR) | 67 dB |
| Thermal Foldback Activation Temperature | +120 °C |
| Package Type | MAX98400A – 36‑pin TQFN; MAX98400B – 24‑pin TQFN |
Source: Maxim MAX98400A/MAX98400B Class D Amplifier Datasheet
All Maxim MAX98400B documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What supply voltage range does the MAX98400A/B support?
Both devices operate from a single 8 V to 28 V supply.
Does the amplifier include thermal protection?
Yes, it has a thermal‑foldback feature that reduces power above +120 °C and also provides traditional thermal protection.