ft2811

ft2811 2.4W Charge Pump Class-G Audio Amplifier GENERAL DESCRIPTION The ft2811 is a Class-G audio power amplifier with battery-tracking AGC technology. It integrates a charge pump and drives up to 2.4W into an 8 Ω speaker (10%THD). With 74% efficiency, the ft2811 helps extend battery life when playing audio. The built-in charge pump generates a 6V supply voltage for the Class-G amplifier. This provides a louder audio output than a stand-alone amplifier directly connected to the battery. The AGC technology helps to adjust Class-G gain automatically. The ft2811 has an integrated lowpass filter. It helps you get lower EMI noise and increase SNR. The ft2811 is available in QFN3x3-20L and QFN4x4-28L Package APPLICATIONS  Cell Phones  Smart phones  MP3/PMP  GPS APPLICATION CIRCUIT FEATURES  Wide Supply Voltage Range from 2.7V to 5.5V  Class-G Audio Amplifier with Integrated ChargePump  Constant Output Power at 2.4W into 8Ω Load from 4.0V Supply  Automatic Gain C...