The LM48555 is an audio power amplifier designed to drive ceramic speakers in
applications such as cell phones, smart phones, PDAs and other portable devices. The LM48555
produces 15.7VP-P with less than 1% THD+N while operating from a 3.2V power
supply. The LM48555 features a low power shutdown mode, and differential inputs for improved noise
The LM48555 includes advanced click and pop suppression that eliminates audible turn-on
and turn-off transients. Additionally, the integrated boost regulator features a soft start
function that minimizes transient current during power-up
Boomer audio power amplifiers were designed specifically to provide high quality output
power with a minimal number of external components. The LM48555 does not require bootstrap
capacitors, or snubber circuits.
The LM48555 is unity-gain stable and uses external gain-setting resistors.