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Audio Amp Speaker 2-CH Stereo 2.5W Class-D 16-Pin LLP EP T/R, LM4674SQ/NOPB, Texas Instruments

The LM4674 is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.The LM4674 is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4? load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4674 features high efficiency compared to conventional Class AB amplifiers. When driving an 8? speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the G0 and G1 pins.Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown control maximizes power savings in mixed mono/stereo applications.

  • Output Short Circuit Protection
  • Stereo Class D Operation
  • No Output Filter Required
  • Logic Selectable Gain
  • Independent Shutdown Control
  • Minimum External Components
  • Click and Pop Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving 2mm x 2mm x 0.6mm DSBGA, and 4mm x 4mm x 0.8mm WQFN Packages
  • Efficiency at 3.6V, 100mW into 8?: 80% (typ)
  • Efficiency at 3.6V, 500mW into 8?: 85% (typ)
  • Efficiency at 5V, 1W into 8?: 85% (typ)
  • Quiescent Power Supply Current
    at 3.6V supply: 4mA
  • Power Output at VDD = 5V,
    RL = 4?, THD = 10%: 2.5 W (typ)
  • Shutdown Current: 0.03µA (typ)

    • Характеристики

    Бренд

    Функция

    Speaker
    Typ_output_power_x_chan_load

    2.5×2@4Ohm W
    Totl_harmon_distortion_noise

    0.05@8Ohm@300mW %, 0.07@8Ohm@500mW
    Amplifier_type

    Class-D
    Max_load_resistance

    8 Ohm
    Typical_voltage_gain

    24 dB
    Min_cmrr

    67 dB
    Specifications

    http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=LM4674&&fileType=pdf
    Supplier_package

    LLP EP
    Country_of_origin

    United States
    Eccn

    EAR99
    Typical_psrr

    75 dB
    Input_signal_type

    Differential
    Htsn

    8542330001
    Lead_finish

    Tin
    Max_processing_temp

    260
    Mounting

    Surface Mount
    Schedule_b

    8542330000
    Msl_level

    1
    Operating_temperature

    -40 to 85 °C
    Output_signal_type

    Differential
    Output_type

    2-Channel Stereo
    Pin_count

    16
    Power_supply_type

    Single
    Product_dimensions

    4 x 4 x 0.8 mm
    Артикул: LM4674SQ/NOPB

    Описание

    The LM4674 is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.The LM4674 is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4? load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM4674 features high efficiency compared to conventional Class AB amplifiers. When driving an 8? speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the G0 and G1 pins.Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown control maximizes power savings in mixed mono/stereo applications.

  • Output Short Circuit Protection
  • Stereo Class D Operation
  • No Output Filter Required
  • Logic Selectable Gain
  • Independent Shutdown Control
  • Minimum External Components
  • Click and Pop Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving 2mm x 2mm x 0.6mm DSBGA, and 4mm x 4mm x 0.8mm WQFN Packages
  • Efficiency at 3.6V, 100mW into 8?: 80% (typ)
  • Efficiency at 3.6V, 500mW into 8?: 85% (typ)
  • Efficiency at 5V, 1W into 8?: 85% (typ)
  • Quiescent Power Supply Current
    at 3.6V supply: 4mA
  • Power Output at VDD = 5V,
    RL = 4?, THD = 10%: 2.5 W (typ)
  • Shutdown Current: 0.03µA (typ)

    • Детали

    Бренд

    Функция

    Speaker
    Typ_output_power_x_chan_load

    2.5×2@4Ohm W
    Totl_harmon_distortion_noise

    0.05@8Ohm@300mW %, 0.07@8Ohm@500mW
    Amplifier_type

    Class-D
    Max_load_resistance

    8 Ohm
    Typical_voltage_gain

    24 dB
    Min_cmrr

    67 dB
    Specifications

    http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=LM4674&&fileType=pdf
    Supplier_package

    LLP EP
    Country_of_origin

    United States
    Eccn

    EAR99
    Typical_psrr

    75 dB
    Input_signal_type

    Differential
    Htsn

    8542330001
    Lead_finish

    Tin
    Max_processing_temp

    260
    Mounting

    Surface Mount
    Schedule_b

    8542330000
    Msl_level

    1
    Operating_temperature

    -40 to 85 °C
    Output_signal_type

    Differential
    Output_type

    2-Channel Stereo
    Pin_count

    16
    Power_supply_type

    Single
    Product_dimensions

    4 x 4 x 0.8 mm

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