LM4863 - National Semiconductor

LM4863 Dual 2.2W Audio Amplifier

The LM4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2)with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode to drive stereo headphones. Boomer audio power amplifiers were designed spe.

Features

an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on. Note 1: An LM4863MTE which has been properly mounted to the circuit board will deliver 2.2W into 4Ω. The other package options for the LM4863 will deliver 1.1W into 8Ω. See the Application Information section for LM4863MTE usage information. Note 2: An LM4863MTE which has been properly mounted to the circuit board and forced-air cooled will deliver 2.5W into 3Ω. Key Specifications n PO a.