LM4857 Datasheet (National Semiconductor) - Stereo 1.2W Audio Sub-system

LM4857, Stereo 1.2W Audio Sub-system

The LM4857 is an integrated audio sub-system designed for stereo cell phone applications.

Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 495mW per channel into an 8Ω load, a stereo headphone amplifier delivering 33mW per channel into a 32Ω load, a mono earpiece amplifi

LM4857 Features

* include an ultra-low current shutdown mode and thermal shutdown protection. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. The LM4857 is available in a 30-bump ITL package and a 28

* lead LLP package.