The LM4871 is a 3.0Watt Audio Power Amplifier. And the LM4871 primarily designed for high quality application in other portable communication device. It is capable of driving 8Ω speaker load at a continuous average output of 1.4W / 10% distortion (THD+N) from a 5.0V power supply. A feature of the LM4871 amplifier to switch BTL mode. And the LM4871 audio amplifier features low power consumption shutdown mode. It is achieved by driving the shutdown pin with logic high. Besides the LM4871 has an internal thermal shutdown protection feature. The LM4871 amplifier was designed specifically to provide high quality output power with a minimal amount of external components. The LM4871 does not require output capacitors, and the LM4871 is ideally suited for other low voltage applications or portable electronic devices where minimal power consumption is a primary requirement.