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LM4866LQ Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM4866LQ Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 21 page 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 4 Ω 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 protec- tion. 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 4 Ω. The other package options for the LM4866 will deliver 1.1W into 8 Ω. 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 3 Ω. Key Specifications n P O at 1% THD+N n LM4866LQ, 3 Ω,4Ω loads 2.5W(typ), 2.2W(typ) n LM4866MTE, 3 Ω,4Ω loads 2.5W(typ), 2.2W(typ) n LM4866MTE, 8 Ω load 1.1W(typ) n LM4866MT, 8 Ω load 1.1W(typ) n Shutdown current 0.7µA(typ) n Supply voltage range 2.0V to 5.5V Features n Stereo BTL amplifier mode n “Click and pop” suppression circuitry n Unity-gain stable n Thermal shutdown protection circuitry n TSSOP and Exposed-DAP LLP packages Applications n Multimedia monitors n Portable and desktop computers n Portable televisions Typical Application 20018601 Note: Pin out shown for LLP package. Refer to the Connection Diagrams for the pinout of the TSSOP package. Boomer® is a registered trademark of National Semiconductor Corporation. October 2002 © 2002 National Semiconductor Corporation DS200186 www.national.com |
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