Datasheet Summary
5W Dual-PumpTM Class-AB/D/G Audio Power Amplifier
GENERAL DESCRIPTION
The ft2850 is a 5W Dual-PumpTM Class-AB/D/G audio power amplifier with automatic level control (ALC) for portable audio applications. It integrates Class-AB and Class-D audio power amplifiers with a Class-G charge pump regulator based upon proprietary Dual-PumpTM topology. It operates from 3.2V to 4.6V supply. With a supply voltage at 3.7V, it can deliver an output power of 5W with 10% THD+N, or an ALC output power of 4W with 0.6% THD+N, into a 4Ω speaker load.
In ft2850, the power supply rail of the audio amplifier’s output stage is adaptively boosted and regulated by a Class-G charge pump regulator, allowing...