Audio Power Amplifier with Boost Converter to Drive Ceramic Speakers
November 2004
LM4802B Audio Power Amplifier with Boost Converter to Drive Ceramic Speakers
General Description
The LM4802B integrates a Boost Converter with an Audio Power Amplifier to drive Ceramic Speakers in portable applications.
When powered by a 3V supply, it is capable of forcing 12Vp-p across a 2µF + 30Ω bridge-tied-load (BTL) with less than 1% THD+N.
Boomer audio power
amplifiers were designed specifically to provide high quality output power with a minimal amount of external components.
The LM4802B does not require bootstrap
capacitors, or snubber circuits.
Therefore it is ideally suited for portable application...