LM4866

LM4866 2.2W Stereo Audio Amplifier October 2002 LM4866 2.2W Stereo Audio Amplifier General Description The LM4866 is a bridge-connected (BTL) stereo audio power amplifier which, when connected to a 5V supply, delivers 2.2W to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2) with less than 1.0% THD+N. With the LM4866 packaged in the LLP, the customer benefits include low thermal impedance, low profile, and small size. This package minimizes PCB area and maximizes output power. The LM4866 features an externally controlled, low-power consumption shutdown mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on. Boomer audio power amplifiers are designed specifically to use few external components and provide high quality output power in a surface mount package. Note 1: An LM4866MTE or LM4866LQ that has been properly mounted to a circuit board will deliver 2.2W into 4Ω. The other package options for the LM4866 will deliver 1.1W into 8Ω. See the Application Information sections for further information concerning the LM4866MTE and LM4866LQ. Note 2: An LM4866MTE or LM4866LQ that has been properly mounted to a circuit board will deliver 2.5W into 3Ω. Key Specifications n PO at 1% THD+N n LM4866LQ, 3Ω, 4Ω loads n LM4866MTE, 3Ω, 4Ω loads n LM4866MTE, 8Ω load n LM4866MT, 8Ω load n Shutdown current n Supply voltage range 2.5W(typ), 2.2W(typ) 2.5W(typ), 2.2W(typ) 1.1W(typ) 1.1W(typ) 0.7µA(typ) 2.0V to 5.5V Features n n n n n S...