National Semiconductor | High-performance Analog

 

 LP3971   
Power Management Unit for Advanced Application Processors 		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 LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 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
  • 150/300/370 mA output currents
  • LDO RTC 30 mA
  • LDO 1 300 mA
  • LDO 2 150 mA
  • LDO 3 150 mA
  • LDO 4 150 mA
  • LDO 5 370 mA
  • 100 mV (typ) dropout


    • Applications

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




    • Typical Application
    *click for larger image


    		Block 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 0.25 Volt
    PowerWise Technology Dynamic Voltage Scaling
    Feedback Tolerance 3 %
    Output1 VoutMin 0.8 Volt
    Output1 VoutMax 3.3 Volt
    Output1 IoutMax 1600 mA
    Output1 Topology Buck
    Output2 VoutMin 1 Volt
    Output2 VoutMax 3.3 Volt
    Output2 IoutMax 370 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
    Adjustable Output Yes
    PowerGood / Error Flag Yes
    On/Off Pin Yes
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LP3971 Power Management Unit for Advanced Application Processors1166
    Kbytes    		22-Oct-08日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1620: Application Note 1620 LP3971 USB Evaluation Board1648
    Kbytes    		4-May-07 


    Other Technical Documents
    TitleTypeDate
    Managing Power Consumption on Your Portable Applications Processor DesignExternal Article 2007-03-16
    Optimizing Power Management Solutions for Advanced Applications ProcessorsTechnology Edge 2006-02-01

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP3971SQ-2G16/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-7848/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-8858/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-B410/NOPB

    LP3971SQ-B410

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1950
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide0
    RS COMPONENTSWorldwide20
    TAYLORAmericas1950
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-B510/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-D510/NOPB

    LP3971SQ-D510

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide3000
    DIGI-KEYWorldwide0
    MOUSERWorldwide975
    RS COMPONENTSWorldwide15
    TAYLORAmericas3000
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-F211/NOPB

    LP3971SQ-F211

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    RS COMPONENTSWorldwide75
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-G824/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-N510/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-O509/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-P55A/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-Q418/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-U511/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQ-W416/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    1000
    LP3971SQE-7848/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide250
    MOUSERWorldwide250
    		$3.25 each at 1K+ pcsreel
    of
    250
    LP3971SQX-2G16/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-7848/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    CEACAsia Pacific13500
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-8858/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-B410/NOPB

    LP3971SQX-B410

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-B510/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-D510/NOPB

    LP3971SQX-D510

    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-F211/NOPB

    LP3971SQX-F211

    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-G824/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-N510/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-O509/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-P55A/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-Q418/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-U511/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.25 each at 1K+ pcsreel
    of
    4500
    LP3971SQX-W416/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 12 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 LP3971.

    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 LP3971 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP3971SQ-B410EV
    		Power Management Unit for Advanced Application ProcessorsFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$150.00 each1

    The LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 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

    LDOs

    • Programmable V QUT of 1.0V-3.3V
    • ±3% output voltage accuracy
    • 150/300/370mA output currents
           __LDO RTC 30mA
           __LDO 1 300 mA
           __LDO 2 150mA
           __LDO3 150mA
           __LDO 4 150mA
           __LDO5 370mA
           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
    LP3971SQ-2G16/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-2G16
    LP3971SQ-7848/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-7848
    LP3971SQ-8858/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-8858
    LP3971SQ-B410/NOPB

    LP3971SQ-B410
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-B410
    LP3971SQ-B510/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-B510
    LP3971SQ-D510/NOPB

    LP3971SQ-D510
    		65.728
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-D510
    LP3971SQ-F211/NOPB

    LP3971SQ-F211
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-F211
    LP3971SQ-G824/NOPB

    		65.728
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-G824
    LP3971SQ-N510/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-N510
    LP3971SQ-O509/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-O509
    LP3971SQ-P55A/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-P55A
    LP3971SQ-Q418/NOPB

    		65.728
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-Q418
    LP3971SQ-U511/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-U511
    LP3971SQ-W416/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71W416
    LP3971SQE-7848/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-7848
    LP3971SQX-2G16/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-2G16
    LP3971SQX-7848/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-7848
    LP3971SQX-8858/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-8858
    LP3971SQX-B410/NOPB

    LP3971SQX-B410
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-B410
    LP3971SQX-B510/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-B510
    LP3971SQX-D510/NOPB

    LP3971SQX-D510
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-D510
    LP3971SQX-F211/NOPB

    LP3971SQX-F211
    		65.727
    65.995
    		LLP401
    1    		260
    260    		DetailDownloadN/A
    		NS
    UZXYTT
    71-F211
    LP3971SQX-G824/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-G824
    LP3971SQX-N510/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-N510
    LP3971SQX-O509/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-O509
    LP3971SQX-P55A/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-P55A
    LP3971SQX-Q418/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-Q418
    LP3971SQX-U511/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71-U511
    LP3971SQX-W416/NOPB

    		65.727
    		LLP401260DetailDownloadN/A
    		NS
    UZXYTT
    71W416

    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 LP3971.

    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 LP3971 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP3971SQ-2G16CMOS70213010015840003449464325
    LP3971SQ-7848CMOS70213010015840003449464325
    LP3971SQ-8858CMOS70213010015840003449464325
    LP3971SQ-B410CMOS70213010015840003449464325
    LP3971SQ-B510CMOS70213010015840003449464325
    LP3971SQ-D510CMOS70213010015840003449464325
    LP3971SQ-F211CMOS70213010015840003449464325
    LP3971SQ-G824CMOS70213010015840003449464325
    LP3971SQ-N510CMOS70213010015840003449464325
    LP3971SQ-O509CMOS70213010015840003449464325
    LP3971SQ-P55ACMOS70213010015840003449464325
    LP3971SQ-Q418CMOS70213010015840003449464325
    LP3971SQ-U511CMOS70213010015840003449464325
    LP3971SQ-W416CMOS70213010015840003449464325
    LP3971SQE-7848CMOS70213010015840003449464325
    LP3971SQX-2G16CMOS70213010015840003449464325
    LP3971SQX-7848CMOS70213010015840003449464325
    LP3971SQX-8858CMOS70213010015840003449464325
    LP3971SQX-B410CMOS70213010015840003449464325
    LP3971SQX-B510CMOS70213010015840003449464325
    LP3971SQX-D510CMOS70213010015840003449464325
    LP3971SQX-F211CMOS70213010015840003449464325
    LP3971SQX-G824CMOS70213010015840003449464325
    LP3971SQX-N510CMOS70213010015840003449464325
    LP3971SQX-O509CMOS70213010015840003449464325
    LP3971SQX-P55ACMOS70213010015840003449464325
    LP3971SQX-Q418CMOS70213010015840003449464325
    LP3971SQX-U511CMOS70213010015840003449464325
    LP3971SQX-W416CMOS70213010015840003449464325

    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 LP3971.

    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 LP3971 is located at RoHS Status.

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