National Semiconductor | High-performance Analog

 

 LP5553   

PowerWise AVS Energy Management Unit with SPMI
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Features

  • SPMI bus for system-level power management
  • High-efficiency PowerWise ® Technology Adaptive Voltage Scaling for intelligent energy management in AVS and DVS environments
  • Two digitally programmable 3.6 MHz buck regulators to power dual voltage domains
  • Five Programmable LDOs for system functions such as:
  • PLL/Clock Generation
  • I/O
  • Memory Retention
  • Internal soft start
  • Variable regulator power up sequencing.
  • Description

    The LP5553 is a System Power Management Interface (SPMI) compliant Energy Management Unit for reducing power consumption of low power hand held applications such as dual-core processors and DSPs.

    The LP5553 contains 2 advanced, digitally controlled step-down DC/DC converters for supplying variable voltages to a SoC. The device also incorporates 5 programmable low-dropout, low noise linear regulators for powering I/O, peripheral logic blocks, auxiliary system functions, and maintaining memory retention (dual-domain) in shutdown-mode.

    The LP5553 implements 2 Non-Request Capable Slaves that are controlled via the SPMI. The LP5553 operates cooperatively with PowerWise ® AVS technology compatible processors to optimize supply voltages adaptively (AVS - Adaptive Voltage Scaling) over process and temperature variations. It also supports dynamic voltage scaling (DVS) using frequency/voltage pairs from pre-characterized look-up tables.

    Key Specification

  • 2.7 to 4.8V Input Voltage Range
  • ±2% (typical) Output Voltage Range
  • Programmable DC/DC Buck Converters

  • 800 mA Output Current per DC/DC Converter
  • Up to 88% Efficiency
  • Digitally Programmable from 0.6 to 1.235V
  • Programmable LDOs

  • Five digitally programmable LDOs

  • Applications

  • GSM/GPRS/EDGE & UMTS cellular handsets
  • Hand-held radios
  • PDAs
  • Battery powered devices
  • Portable instruments


  • LP5553 System Block Diagram

     

    ParametersValues
    Input Min Voltage 2.7 Volt
    Input Max Voltage 4.8 Volt
    Output Range Bucks: 0.6 to 1.235V; LDO1: 0.7 to 2.2V; LDO2: 1.5 to 3.3V; LDO3 and LDO4: 0.6 to 1.25V; LDO5: 1.2 to 3.3V
    Channels 7 Channels
    Dropout Voltage 0.26 Volt
    PowerWise Technology Adaptive Voltage Scaling
    Output1 VoutMin 0.6 Volt
    Output1 VoutMax 1.235 Volt
    Output1 IoutMax 800 mA
    Output1 Topology Buck
    Output2 VoutMin 0.6 Volt
    Output2 VoutMax 1.235 Volt
    Output2 IoutMax 800 mA
    Output2 Topology Buck
    Output3 VoutMin 1.5
    Output3 VoutMax 3.3 Volt
    Output3 IoutMax 250 mA
    Output3 Topology LDO
    Output4 VoutMin 0.7 Volt
    Output4 VoutMax 2.2 Volt
    Output4 IoutMax 100 mA
    Output4 Topology LDO
    Special Features SPMI compliant with 2 slave domains. 2 Buck regulators; 5 LDOs.
    Topology Buck, LDO
    Switching Frequency 3600 kHz
    Adj Switch Frequency No
    Sync Pin No
    RegType Power Management Unit
    Step-Down Yes
    Step-Up No
    Inverting No
    Flyback No
    Efficiency (peak) 88 %
    Adjustable Output Yes
    PowerGood / Error Flag No
    On/Off Pin Yes
    Multiple Output Capability Yes
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LP5553 PowerWise AVS Energy Management Unit with SPMI3801
    Kbytes
    5-Mar-09   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1857: Application Note 1857 LP5553 Evaluation Board3940
    Kbytes
    25-Mar-09 
    AN-1653: Application Note 1653 LP555x Graphical User Interface1675
    Kbytes
    7-Jun-07 


    Other Technical Documents
    TitleTypeDate
    Saving Energy via Smart Power Management (PowerWise AVS)Power Designer 2007-06-27
    Maximize Processor Energy Savings in Media-Intensive Mobile Devices with Adaptive Voltage ScalingExternal Article 2007-07-09
    Processor Energy Savings Through Adaptive Voltage ScalingExternal Article 2008-03-01

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP5553TL/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $4.50 each at 1K+ pcsreel
    of
    250
    LP5553TLX/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $4.50 each at 1K+ pcsreel
    of
    1000

    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 LP5553.

    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 LP5553 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP5553TLEV-KIT
    Evaluation Board for the LP5553TLFull production


     
    DistributorRegionQty
    CALLN/A

    Description:

    The LP5553 evaluation kit is based on a modular system, where the actual evaluation board is plugged on top of the USB interface connecting to a PC. LP5553 evaluation board can also be operated standalone.

    Contents:

    • LP5553 Evaluation Board
    • USB Interface Board
    • USB interface cable
    • CR-ROM including:
      • Evaluation SW installer (LP5553_sw_1.0.exe)
      • Evaluation kit user guide (AN-1857.pdf)
      • LP5553 datasheet (LP5553.pdf)
      • Contents.txt
      • SPMI_specification.txt



    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
    LP5553TL/NOPB

    13.433
    MICRO SMD361260DetailDownloadN/A
    XYTT
    I 5553
    LP5553TLX/NOPB

    13.433
    MICRO SMD361260DetailDownloadN/A
    XYTT
    I 5553

    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 LP5553.

    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 LP5553 is located at RoHS Status.

    CAD Symbols and Models
    Download LP5553 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP5553TLCMOS70213010015840003449464325
    LP5553TLXCMOS70213010015840003449464325

    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 LP5553.

    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 LP5553 is located at RoHS Status.

    PowerWise AVS Overview and Demo
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    PowerWise AVS Overview and Demo
    Date: 2008-11-18
    Length: 0:4:21
    [Information as of 9-Feb-2012]