NCP9004 is a cost-effective mono Class-D audio power amplifier capable of delivering 2.65 W of continuous average power to 4.0 � from a 5.0 V supply in a Bridge Tied Load (BTL) configuration.
The NCP9004 is a mono Class‑D audio power amplifier designed for portable devices such as cellular handsets and PDAs. It delivers up to 2.65 W continuous average power in a bridge‑tied load (BTL) configuration from a 5 V supply and achieves over 90 % efficiency with a very low quiescent current.
The datasheet includes detailed pin descriptions, maximum ratings, electrical characteristics, typical application circuits, efficiency curves, THD+N performance, and package dimensions. It also lists ordering information and protection features such as short‑circuit protection and pop‑and‑click noise suppression.
| Supply Voltage Range | 2.5 V – 5.5 V |
|---|---|
| Typical Output Power | 2.65 W (5 V, BTL) |
| Maximum Output Power (8 Ω load) | 1.4 W |
| Efficiency | up to 90 % |
| Quiescent Current | 2.5 mA typical |
| Thermal Shutdown Temperature | 160 °C |
The device operates from 2.5 V up to 5.5 V supply voltage.
It can deliver up to 2.65 W continuous average power at a 5 V supply in a bridge‑tied load configuration.
The amplifier achieves efficiency up to about 90 % under typical conditions.
The part includes short‑circuit protection, pop‑and‑click noise protection, and a shutdown pin that puts the device into a low‑power shutdown mode.