The LPA4809 is a dual audio power amplifier capable of delivering 140mW per channel of continuous average power into a 16Ω load with 0.1 %(THD+N) from a 5V power supply. Boomer audio power amplifier was designed specifically to provide high quality output power with a minimal amount of external components. Since the LPA4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The unity-gain stable LPA4809 can be configured by external gain-setting resistors. The LPA4809 features an externally controlled, active-low, micro power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

Applications
 

 Headphone Amplifier

 Microphone Preamplifier

 Personal Computers

 PDA`s

Features
 

 THD+N at 1KHz at 140mW continuous average power into 16Ω 0.1%

 THD+N at 1KHz at 80mW continuous average power into 32Ω 0.1%

 Shutdown Current 0.4uA

 Active-low shutdown mode

 “Click and Pop” reduction circuitry

 Low shutdown current

 MSOP8 surface mount packaging

 No bootstrap capacitors required

 Unity-gain