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ft2850 - Class-AB/D/G Audio Power Amplifier

Datasheet Summary

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.

Features

  • ALC that constantly monitors and safeguards the audio output against the boosted supply voltage, preventing output clipping distortion, excessive power dissipation, or speaker over-load. Once an over-level condition is detected, the ALC lowers the voltage gain of the audio amplifier proportionally to limit the peak audio output voltage.

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Datasheet Details

Part number ft2850
Manufacturer Fangtek
File Size 43.82 KB
Description Class-AB/D/G Audio Power Amplifier
Datasheet download datasheet ft2850 Datasheet
Additional preview pages of the ft2850 datasheet.

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Full PDF Text Transcription

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ft2850 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 much higher audio loudness than a stand-alone one directly connected to the battery.
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