The LM4927 is a fully differential audio power amplifier primarily designed for demanding
applications in mobile phones and other portable communication device applications. It is capable
of delivering 2.5 watts of continuous average power to a 4Ω load with less than 10% distortion
(THD+N) from a 5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output
power with a minimal amount of external components. The LM4927 does not require output coupling
capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low
voltage applications where minimal power consumption is a primary requirement.
The LM4927 features a low-power consumption shutdown mode. To facilitate this, Shutdown
may be enabled by logic low. Additionally, the LM4927 features an internal thermal shutdown
The LM4927 contains advanced pop & click circuitry which eliminates noises which
would otherwise occur during turn-on and turn-off transitions.
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