GENERAL DESCRIPTION
The ft2830 is a highly efficient 4.5W Class-G audio power amplifier with automatic level control (ALC) for use in battery-powered portable devices. It integrates a filterless Class-D audio power amplifier with a Class-G charge pump regulator based upon proprietary Dual-PumpTM topology. It operates from 3.2V to 4.6V supply. When operating with a 4.2V supply voltage, the ft2830 can deliver into a 4Ω load a maximum output power up to 4.5W with 10% THD+N, or a constant output power at 3.5W with 0.5% THD+N. Its high efficiency, up to 83%, helps extend battery life.

FEATURES
● Proprietary Dual-PumpTM topology
● Filterless Class-D audio amplifier integrated with a
   Class-G charge pump regulator
● Automatic level control to eliminate output clipping
● Maximum output power (Non-ALC Mode)
   4.5W (VDD=4.2V, THD+N=10%, RL=4Ω)
   3.6W (VDD=3.6V, THD+N=10%, RL=4Ω)
● Constant output power (ALC Mode)
   3.5W (VDD=4.2V, THD+N=0.5%, RL=4Ω)
   3.1W (VDD=3.6V, THD+N=0.5%, RL=4Ω)
● High efficiency up to 83%
● Low THD+N: 0.05%
   (VDD=3.6V, f=1kHz, RL=4Ω, Po=1W)
● ALC dynamic range: 10dB
● Low quiescent current: 2.6mA @ VDD=3.6V
● High PSRR: 70dB at 1kHz
● Two gain settings: 24dB and 27.6dB
● One-wire pulse control to set operating mode and
   voltage gain
● Auto-recovering short-circuit protection
● Available in TSSOP-20L package

APPLICATIONS
● Portable Speakers
● Multimedia Internet Devices
● Mobile Phones
● Portable Consumer Electronic Devices