National Semiconductor | High-performance Analog

 

 LM4995   
1.3W Audio Power Amplifier from the PowerWise® Family		 Click link to Download

Features

  • Available in space-saving 0.4mm pitch μSMD package
  • Ultra low current shutdown mode
  • BTL output can drive capacitive loads
  • Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions
  • 2.4 - 5.5V operation
  • No output coupling capacitors, snubber networks or bootstrap capacitors required
  • Unity-gain stable
  • External gain configuration capability
  • LLP package: 0.5mm pitch, 3 x 3 mm

    • Description

    The LM4995 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1.2W of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.

    Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4995 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

    The LM4995 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4995 features an internal thermal shutdown protection mechanism.

    The LM4995 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions.

    The LM4995 is unity-gain stable and can be configured by external gain-setting resistors.

    Key Specification
    ■   PSRR at 3.6V (217Hz & 1kHz) 75dB
    ■   Output Power at 5.0V, 1% THD+N, 8Ω 1.3W (typ)
    ■   Output Power at 3.6V, 1% THD+N, 8Ω 625mW (typ)
    ■  Shutdown Current 0.01µA (typ)


    Applications

  • Mobile Phones
  • PDAs
  • Portable electronic devices




    • Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Power@ 8Ohms, 1% THD 1.3 Watt
    THD 0.1 %
    PSRR 73 dB
    Channels 1 Channels
    Supply Range +2.4 - +5.5 V
    THD Conditions Po = 500mWRMS; f = 1kHz
    PSRR Conditions Vripple = 200mV sine p-p, Input Teminated to Ground
    User Supply 5 Volt
    Shutdown Type Low
    Temperature Min -40 deg C
    Temperature Max 85 deg C
    Automotive Yes
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM4995 1.3W Audio Power Amplifier405
    Kbytes    		19-Nov-09   

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4995SD/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide5000
    DIGI-KEYWorldwide1327
    MOUSERWorldwide1000
    TAYLORAmericas5000
    		$0.55 each at 1K+ pcsreel
    of
    1000
    LM4995TM/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 16 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide925
    MOUSERWorldwide1250
    		$0.50 each at 1K+ pcsreel
    of
    250
    LM4995TMX/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.50 each at 1K+ pcsreel
    of
    3000

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4995.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4995 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM4995TMBD
    		1.3W Audio Power AmplifierFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$150.00 each1

    The LM4995 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications.

    Features:

    • Available in space-saving 0.4mm pitch µSMD package
    • Ultra low current shutdown mode
    • BTL output can drive capacitive loads
    • Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions
    • 2.4 - 5.5V operation
    • No output coupling capacitors, snubber networks or bootstrap capacitors required
    • Unity-gain stable
    • External gain configuration capability
    • LLP package: 0.5mm pitch, 3 x 3 mm

    Applications:

    • Mobile Phones
    • PDAs
    • Portable electronic devices



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LM4995SD/NOPB

    		20.736
    		LLP81260DetailDownloadN/A
    		ZXYTT
    L4995
    LM4995TM/NOPB

    		1.997
    		MICRO SMD91260DetailDownloadN/A
    		XVG
    I G8
    LM4995TMX/NOPB

    		1.997
    		MICRO SMD91260DetailDownloadN/A
    		XVG
    I G8

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4995.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4995 is located at RoHS Status.

    CAD Symbols and Models
    Download LM4995 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM4995SDCMOS70213010015840003449464325
    LM4995TMCMOS70213010015840003449464325
    LM4995TMXCMOS70213010015840003449464325

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM4995.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM4995 is located at RoHS Status.

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation