National Semiconductor | High-performance Analog

 

 LP3972   
Power Management Unit for Advanced Application Processors from the PowerWise® Family		 Click link to Download

Features

  • Compatible with advanced applications processors requiring DVM (Dynamic Voltage Management)
  • Three buck regulators for powering high current processor functions or I/O's
  • 6 LDO's for powering RTC, peripherals, and I/O's
  • Backup battery charger with automatic switch for lithium-manganese coin cell batteries and Super capacitors
  • I 2C compatible high speed serial interface
  • Software control of regulator functions and settings
  • Precision internal reference
  • Thermal overload protection
  • Current overload protection
  • Tiny 40-pin 5x5 mm LLP package

    • Description

    The LP3972 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3972 is optimized for low power handheld applications and provides 6 low-dropout, low-noise linear regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. A high speed serial interface is included to program individual regulator output voltages as well as on/off control.

    Key Specification Buck Regulators

  • Programmable VOUT from 0.725 to 3.3V
  • Up to 95% efficiency
  • Up to 1.6A output current
  • ±3% output voltage accuracy
    • LDO’s
  • Programmable VOUT of 1.0V–3.3V
  • ±3% output voltage accuracy
  • 150/300/400 mA output currents
  • LDO_RTC 30 mA
  • LDO1 300 mA
  • LDO2 150 mA
  • LDO3 150 mA
  • LDO4 150 mA
  • LDO5 400 mA
  • 100 mV (typ) dropout


    • Applications

  • PDA phones
  • Smart phones
  • Personal Media Players
  • Digital cameras
  • Application processors
  • Marvell PXA
  • Freescale
  • Samsung

    		• Connection Diagram
    click for larger image



    Typical Performance
    click for larger image


     

    ParametersValues
    Input Min Voltage 2.7 Volt
    Input Max Voltage 5.5 Volt
    Output Range LDOs: 1.0 to 3.3V; Bucks: 0.8 to 3.3V
    Channels 9 Channels
    Dropout Voltage .25 Volt
    PowerWise Technology Dynamic Voltage Scaling
    Feedback Tolerance 3 %
    Output1 VoutMin .8 Volt
    Output1 VoutMax 3.3 Volt
    Output1 IoutMax 1600 mA
    Output1 Topology Buck
    Output2 VoutMin 1 Volt
    Output2 VoutMax 3.3 Volt
    Output2 IoutMax 300 mA
    Output2 Topology LDO
    Output3 VoutMin 1.8
    Output3 VoutMax 3.3 Volt
    Output3 IoutMax 300 mA
    Output3 Topology LDO
    Output4 VoutMin 1 Volt
    Output4 VoutMax 3.3 Volt
    Output4 IoutMax 150 mA
    Output4 Topology LDO
    Special Features 3 buck regulators, 6 LDOs. See datasheet for specific output voltages, currents.
    Topology Buck, LDO
    Switching Frequency 2000 kHz
    Adj Switch Frequency No
    Sync Pin Yes
    RegType Power Management Unit
    Step-Down Yes
    Step-Up No
    Inverting No
    Flyback No
    Efficiency (peak) 95 %
    Adjustable Output Yes
    PowerGood / Error Flag Yes
    On/Off Pin Yes
    Multiple Output Capability Yes
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LP3972 Power Management Unit for Advanced Application Processors1171
    Kbytes    		22-Aug-11   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1621: Application Note 1621 LP3972 USB Evaluation Board2422
    Kbytes    		4-May-07 

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP3972SQ-0514/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-5810/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples

    Contact your distributor
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-A413/NOPB

    LP3972SQ-A413

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide26
    KEIKONGAsia Pacific1000
    MOUSERWorldwide1000
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-A514/NOPB

    LP3972SQ-A514

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1069
    DIGI-KEYWorldwide0
    TAYLORAmericas1069
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-E514/NOPB

    LP3972SQ-E514

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-I414/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AITGAsia Pacific1001
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQ-I514/NOPB

    LP3972SQ-I514

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide0
    TAYLORAmericas1000
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3972SQX-0514/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-5810/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-A413/NOPB

    LP3972SQX-A413

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-A514/NOPB

    LP3972SQX-A514

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-E514/NOPB

    LP3972SQX-E514

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-I414/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3972SQX-I514/NOPB

    LP3972SQX-I514

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500

    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 LP3972.

    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 LP3972 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP3972SQ-I514EV/NOPB

    		Power Management Unit for Advanced Application ProcessorsFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2
    		$150.00 each1

    The LP3972 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3972 is optimized for low power handheld applications and provides 6 low dropout, low noise linear regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO's. A high speed serial interface is included to program individual
    regulator output voltages as well as on/off control.

    Key Specifications:

    Buck Regulators:

    • Programmable V QUT from 0.725 to 3.3V
    • Up to 95% efficiency
    • Up to 1.6A output current
    • ± 3% output voltage accuracy

    LDO's:

    • Programmable V QUT of 1.0V-3.3V
    • ±3% output voltage accuracy
    • 150/300/400mA output currents
           __LDO RTC 30mA
           __LDO 1 300 mA
           __LDO 2 150mA
           __LDO3 150mA
           __LDO 4 150mA
           __LDO5 400mA
           100mV (typ) dropout

    Features:

    • Compatible with advanced applications processors requiring DVM (Dynamic Voltage Management)
    • Three buck regulators for powering high current processor functions or I/O's 6 LDO's for powering RTC, peripherals, and I/O's
    • Backup battery charger with automatic switch for lithium-manganese coin cell batteries and Super capacitors
    • I 2C compatible high speed serial interface
    • Software control of regulator functions and settings
    • Precision internal reference
    • Thermal overload protection
    • Current overload protection
    • Tiny 40-pin 5 x 5 mm LLP package

    Applications:

    • PDA phones
    • Smart phones
    • Personal Media Players
    • Digital cameras
    • Application processors
           __Intel Xscale
           __Freescale
           __Samsung



    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
    LP3972SQ-0514/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-0514
    LP3972SQ-5810/NOPB

    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-5810
    LP3972SQ-A413/NOPB

    LP3972SQ-A413
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-A413
    LP3972SQ-A514/NOPB

    LP3972SQ-A514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-A514
    LP3972SQ-E514/NOPB

    LP3972SQ-E514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-E514
    LP3972SQ-I414/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-I414
    LP3972SQ-I514/NOPB

    LP3972SQ-I514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-I514
    LP3972SQX-0514/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-0514
    LP3972SQX-5810/NOPB

    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-5810
    LP3972SQX-A413/NOPB

    LP3972SQX-A413
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-A413
    LP3972SQX-A514/NOPB

    LP3972SQX-A514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-A514
    LP3972SQX-E514/NOPB

    LP3972SQX-E514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-E514
    LP3972SQX-I414/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    72-I414
    LP3972SQX-I514/NOPB

    LP3972SQX-I514
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    72-I514

    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 LP3972.

    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 LP3972 is located at RoHS Status.

    CAD Symbols and Models
    Download LP3972 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP3972SQ-0514CMOS70213010015840003449464325
    LP3972SQ-5810CMOS70213010015840003449464325
    LP3972SQ-A413CMOS70213010015840003449464325
    LP3972SQ-A514CMOS70213010015840003449464325
    LP3972SQ-E514CMOS70213010015840003449464325
    LP3972SQ-I414CMOS70213010015840003449464325
    LP3972SQ-I514CMOS70213010015840003449464325
    LP3972SQX-0514CMOS70213010015840003449464325
    LP3972SQX-5810CMOS70213010015840003449464325
    LP3972SQX-A413CMOS70213010015840003449464325
    LP3972SQX-A514CMOS70213010015840003449464325
    LP3972SQX-E514CMOS70213010015840003449464325
    LP3972SQX-I414CMOS70213010015840003449464325
    LP3972SQX-I514CMOS70213010015840003449464325

    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 LP3972.

    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 LP3972 is located at RoHS Status.

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