NCP2821

www.DataSheet4U.com NCP2821 2.65 W Filterless with Selectable Gain Class−D Audio Amplifier NCP2821 is a cost effective mono audio power amplifier designed for portable communication device applications such as mobile phones. The internal gain setting between 6 dB and 12 dB will also save external gain setting resistors. To achieve a typical audio mono application, you only need an external capacitor for filtering the power supply. The NCP2821 processes analog inputs with a PWM technique that lowers significantly output noise and THD. This part is capable of delivering 2.65 W of continuous average power to a 4.0 W BTL load from a 5.0 V power supply. Operating on a single 3 V supply, the output power stage can provide 500 mW to an 8.0 W BTL load with less than 1% THD+N. For cellular handsets or PDAs it offers space and cost savings because no output filter is required when using inductive transducers. Its improved Class−D technology makes it suitable for portable devices. With 90% efficiency and very low shutdown current, it increases widely the lifetime of your battery compared to a ClassAB solution. It also minimizes the junction temperature. It fully rejects “pop & click” noises with a fast start−up time of 9 ms. Added to a −65 dB PSRR, the NCP2821 audio power amplifier is specifically designed to provide high quality output power from low supply voltage, requiring only 1 external capacitor. Features http://onsemi.com MARKING DIAGRAM 9−PIN FLIP−CHIP CSP FC SUFFIX CASE 499AL...