National Semiconductor | High-performance Analog

 

 LP8725   

Power Management Unit for Application/Multimedia Processors and Sub-Systems
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Features

  • Two High Efficiency Step-Down DC/DC Convertors, IOUT = 600 mA , with a 4MHz switching frequency using small 1µH inductors, with options up to 800 mA.
  • Three digital LDOs for up to 300 mA load current each
  • Two low-noise analog 300 mA LDOs
  • Two low-input low output regulators, IOUT = 300 mA
  • I 2C-compatible interface for the controlling of internal registers
  • Adjustable startup sequence through I 2C or configuration
  • Thermal shutdown protection
  • Description

    This device is a multi-function, programmable Power Management Unit (PMU), optimized for sub block power solutions. This device integrates two highly efficient 600 mA step-down DC/DC converters configurable up to 800 mA load with Dynamic Voltage Scaling (DVS) through an I 2C, two low noise analog LDOs, three digital LDOs for up to 300 mA load current each, two Low Input Low Output (LILO) regulators and an I 2C-compatible serial interface to allow a host controller access to the internal control registers. The device also features programmable power-on sequencing. LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.

    The device can be configured either as a Sub_PMU for modules (for example, camera/multimedia modules) or as a stand-alone PMU that powers the processor itself.

    “Notice: This document is not a datasheet. For more information regarding this product or to order samples please contact your local National Semiconductor sales office or visit http://www.national.com/support/dir.html.

    Key Specification

  • 190 mV typ. Dropout Voltage on digital LDOs @ 300 mA
  • 2% typ. Output Voltage Accuracy on digital and analog LDOs
  • 10 µVrms Output Noise on analog LDOs
  • ±2% typ. Output Voltage Bucks up to 93% efficiency
  • 30-bump micro SMD package (0.5 mm pitch)

  • Applications

  • Multi-media Processors
  • Portable Handheld Products


  • Typical Application Diagram (SUB_PMU)

     

    ParametersValues
    Input Min Voltage 2.6 Volt
    Input Max Voltage 4.5 Volt
    Output Range 0.8V to 3.3V
    Channels 7 (2 + 5) Channels
    PowerWise Technology Dynamic Voltage Scaling
    Output1 VoutMin 0.8 Volt
    Output1 VoutMax 3.0 Volt
    Output1 IoutMax 800 mA
    Output1 Topology Buck
    Output2 VoutMin 1.2 Volt
    Output2 VoutMax 3.3 Volt
    Output2 IoutMax 300 mA
    Output2 Topology LDO
    Output3 VoutMin 0.8
    Output3 VoutMax 3.3 Volt
    Output3 IoutMax 300 mA
    Output3 Topology LDO
    Output4 Topology Buck
    Special Features PMU / SUB PMU selectable
    Topology Buck, LDO, WILO LDO
    Switching Frequency 4000 kHz
    Adj Switch Frequency No
    Sync Pin No
    RegType Power Management Unit
    Step-Down Yes
    Adjustable Output Yes
    On/Off Pin Yes
    Multiple Output Capability Yes
    Temperature Min -40 deg C
    Temperature Max 85 deg C
    Automotive No
    PowerWise No

    Datasheets
    TitleSizeDateOther
    Language
    LP8725 Power Management Unit for Application/Multimedia Processors and Sub-Systems530
    Kbytes
    22-Oct-10   

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP8725TLE/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide250
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    250
    LP8725TLE-A/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide250
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    250
    LP8725TLE-B/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide250
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    250
    LP8725TLE-D/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    250
    LP8725TLX/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    3000
    LP8725TLX-A/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    3000
    LP8725TLX-B/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 10 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.30 each at 1K+ pcsreel
    of
    3000
    LP8725TLX-D/NOPB


    RoHS Status


    MICRO SMD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.30 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 LP8725.

    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 LP8725 is located at RoHS Status.

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LP8725TLE/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I 8725
    LP8725TLE-A/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I V023
    LP8725TLE-B/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I V028
    LP8725TLE-D/NOPB

    MICRO SMD301260DetailN/AN/A
    XYTT
    I V031
    LP8725TLX/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I 8725
    LP8725TLX-A/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I V023
    LP8725TLX-B/NOPB

    9.313
    MICRO SMD301260DetailN/AN/A
    XYTT
    I V028
    LP8725TLX-D/NOPB

    MICRO SMD301260DetailN/AN/A
    XYTT
    I V031

    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 LP8725.

    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 LP8725 is located at RoHS Status.

    CAD Symbols and Models
    N/A
     Models
    N/A


    What's New in Power Management and Signal Path--January 2010
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    What's New in Power Management and Signal Path--January 2010
    Date: 2010-02-05
    Length: 0:03:00
    [Information as of 9-Feb-2012]