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LM4673 Datasheet

Part Number LM4673
Manufacturers National Semiconductor
Logo National Semiconductor
Description Class D Audio Power Amplifier
Datasheet LM4673 DatasheetLM4673 Datasheet (PDF)

www.DataSheet4U.com LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier December 2005 LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier General Description The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The LM4673 is designed to meet the demands of mobile phones and ot.

  LM4673   LM4673






Part Number LM4673
Manufacturers Texas Instruments
Logo Texas Instruments
Description Class-D Audio Power Amplifier
Datasheet LM4673 DatasheetLM4673 Datasheet (PDF)

LM4673, LM4673SDBD, LM4673TMBD www.ti.com SNAS317D – DECEMBER 2005 – REVISED MAY 2013 LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier Check for Samples: LM4673, LM4673SDBD, LM4673TMBD FEATURES 1 •2 Mono Class D Operation • No Output Filter Required for Inductive Loads • Externally Configurable Gain • Very Fast Turn On Time: 17μs (typ) • Minimum External Components • "Click and Pop" Suppression Circuitry • Micro-Power Shutdown Mode • Available in Space-Saving 0.4mm Pitch DSBGA .

  LM4673   LM4673







Class D Audio Power Amplifier

www.DataSheet4U.com LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier December 2005 LM4673 Filterless, 2.65W, Mono, Class D Audio Power Amplifier General Description The LM4673 is a single supply, high efficiency, 2.65W, mono, Class D audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design. The LM4673 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4673 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC’s efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power. The LM4673 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND). The gain of the LM4673 is externally configurable which allows independent gain control from multiple sources by summing the signals. Output short circuit and thermal overload protection prevent the device from damage during fault conditions. Key Specifications j Efficiency at 3.6V, 400mW into 8Ω speaker 88% (typ) j Efficiency at 3.6V, 100mW into 8Ω speaker 80% (typ) j Efficiency at 5V, 1W i.


2006-11-24 : 2N2192    AD9397    AD9911    ADL5385    ADUC7128    ADV202    ADV212    ATAM862-8    ATR0625    B82471   


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