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.

FEATURES
● Proprietary Dual-PumpTM topology
● Selectable types of audio outputs: Class-AB/D/G
● Filterless Class-D audio amplifier integrated with a
   Class-G charge pump regulator
● Automatic level control to eliminate output clipping
● Selectable ALC dynamic characteristics
● Maximum output power (Non-ALC Mode)
   5.4W (VDD=3.7V, THD+N=10%, RL=3Ω+33µH)
   5.0W (VDD=3.7V, THD+N=10%, RL=4Ω+33µH)
   3.1W (VDD=3.7V, THD+N=10%, RL=8Ω+33µH)
● ALC output power (ALC Mode)
   4.6W (VDD=3.7V, THD+N=0.6%, RL=3Ω+33µH)
   4.0W (VDD=3.7V, THD+N=0.6%, RL=4Ω+33µH)
   2.4W (VDD=3.7V, THD+N=0.6%, RL=8Ω+33µH)
● Maximum Voltage Gain: 28dB
● ALC dynamic range: 9dB
● Low quiescent current: 4.5mA @ VDD=3.7V
● Low THD+N: 0.04%
   (VDD=3.7V, f=1kHz, RL=4Ω+33µH, Po=0.5W)
● High PSRR: 68dB at 1kHz
● Selectable fade-in time
● Auto-recovering over-current and thermal-overload
   protection
● Available in TSSOP-20L & QFN4x4-20L packages 

APPLICATIONS
● Blue Tooth Speakers
● Smart Phones
● Portable Consumer Electronic Devices