National Semiconductor | High-performance Analog

 

 LM8801   
High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications from the PowerWise® Family		 Click link to Download

Features

  • Over 90% efficiency at 6 MHz Operation
  • 600 mA maximum load capability
  • 6 MHz PWM fixed switching frequency (typ.)
  • 27 µA (typ.) quiescent current in PFM mode
  • Wide Input Voltage Range: 2.3V to 5.5V
  • VOUT = 1.0V to 2.9V with 50 mV steps
  • ±1.5% DC output voltage precision over temperature
  • Best-in-class load transient response
  • Low output ripple in PFM mode
  • Automatic PFM/PWM mode switching
  • Current overload and thermal shutdown protection
  • Internal soft-start
  • 6-bump micro SMD package

  • (1.065 x 1.265 , 0.6 mm or 0.25 mm height)
  • Total solution size < 7mm 2 (works with 0402 capacitors)
  • UVLO

    • Description

    The LM8801 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell and input voltage rails from 2.3V to 5.5V. It provides up to 600 mA load current over the entire input voltage range.

    The LM8801 has a mode-control pin that allows the user to select continuous PWM operation over the complete load range or an auto PFM-PWM mode that changes modes automatically depending on the load. During PWM mode, the device operates at a fixed-frequency of 6 MHz (typ.). In Auto PFM-PWM mode, hysteretic PFM extends the battery life through reduction of the quiescent current during light loads and system standby.

    The LM8801 is available in a 6-bump micro SMD package. Only three compact external surface-mount components, an inductor and two capacitors, are required.


    Applications

  • Mobile Phones
  • MP3 players
  • Wireless LAN
  • PDAs, Pocket PCs
  • Portable Hard Disk Drives



    • revised typ application diagram

     

    ParametersValues
    Output Current 600 mA
    Input Min Voltage 2.3 Volt
    Input Max Voltage 5.5 Volt
    Output Min 1.7927 Volt
    Output Max 1.8473 Volt
    Frequency Min 5600 kHz
    Frequency Max 6400 kHz
    Efficiency (peak) 92 %
    Integrated Inductor No
    PowerGood / Error Flag No
    SoftStart Yes
    Sync Pin No
    Inverting No
    Flyback No
    RegType Switching Regulator
    Temperature Min -30 deg C
    Temperature Max 85 deg C
    Adjustable Output No
    Adj Switch Frequency No
    PWM Mode Voltage Mode Control
    Special Features Small solution size
    Step-Down Yes
    Multiple Output Capability No
    Output Voltage 1.82 Volt
    Switching Frequency 6000 kHz
    Feedback Voltage 1.82 Volt
    On/Off Pin Yes
    Regulator Family SIMPLE SWITCHER
    AEC Q-100 Automotive Grade Undefined
    Automotive No
    PowerWise Yes
    Synchronous Rectification Yes
    Quiescent Current 0.027 mA

    Datasheets
    TitleSizeDateOther
    Language
    LM8801 High Precision 6MHz, 600 mA Synchronous Step-Down DC-DC Converter for Mobile Applications1019
    Kbytes    		12-Oct-11日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1961: Application Note 1961 LM8801 Evaluation Board1382
    Kbytes    		26-Mar-10 

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM8801TME-1.2/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 12 weeks

    Samples

    Contact your distributor
    		CALLreel
    of
    N/A
    LM8801TME-1.82/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide250
    DIGI-KEYWorldwide723
    MOUSERWorldwide500
    TAYLORAmericas250
    		$0.80 each at 1K+ pcsreel
    of
    250
    LM8801TME-2.9/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 12 weeks

    Samples

    Contact your distributor
    		CALLreel
    of
    N/A
    LM8801TMX-1.2/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

     

    Contact your distributor
    		CALLreel
    of
    N/A
    LM8801TMX-1.82/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.80 each at 1K+ pcsreel
    of
    3000
    LM8801TMX-2.9/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 12 weeks

     

    Contact your distributor
    		CALLreel
    of
    N/A
    LM8801XUE-1.82/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide500
    MOUSERWorldwide500
    		$0.80 each at 1K+ pcsreel
    of
    250
    LM8801XUX-1.82/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.80 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 LM8801.

    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 LM8801 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM8801TM-1.82EV/NOPB

    		Evaluation Board for the LM8801Full production
    Lead Free (RoHS)

     

    Contact your distributor
    		$75.00 each1

    Description:

    The LM8801 evaluation board is a working demonstration of a step down DC-DC converter.

    Contents:


    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM8801TME-1.2EV/NOPB

    		Evaluation Board for the LM8801Full production
    Lead Free (RoHS)

     

    Contact your distributor
    		$75.00 each1

    Description:

    The LM8801 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board.

    Contents:




    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
    LM8801TME-1.2/NOPB

    		MICRO SMD61260DetailN/AN/A
    		XV
    I J
    LM8801TME-1.82/NOPB

    		1.678
    		MICRO SMD61260DetailN/AN/A
    		XV
    I E
    LM8801TME-2.9/NOPB

    		1.678
    		MICRO SMD61260DetailN/AN/A
    		XV
    I S
    LM8801TMX-1.2/NOPB

    		MICRO SMD61260DetailN/AN/A
    		XV
    I J
    LM8801TMX-1.82/NOPB

    		1.678
    		MICRO SMD61260DetailN/AN/A
    		XV
    I E
    LM8801TMX-2.9/NOPB

    		MICRO SMD61260DetailN/AN/A
    		XV
    I S
    LM8801XUE-1.82/NOPB

    		N/A
    		MICRO SMD61260DetailN/AN/A
    		XV
    I L
    LM8801XUX-1.82/NOPB

    		N/A
    		MICRO SMD61260DetailN/AN/A
    		XV
    I L

    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 LM8801.

    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 LM8801 is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


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