National Semiconductor | High-performance Analog

 

 LP2989LV   
Micropower 500 mA Low Noise Low-Dropout Regulator for Applications with Output Voltages < 2V 		Click link to Download

Features
  • Ultra low dropout voltage
  • Guaranteed 500 mA continuous output current
  • Very low output noise with external capacitor
  • SO-8, Mini SO-8, 8 Lead LLP surface mount packages
  • <0.8 µA quiescent current when shutdown
  • Low ground pin current at all loads
  • 0.75% output voltage accuracy ("A" grade)
  • High peak current capability (800 mA typical)
  • Wide supply voltage range (16V max)
  • Overtemperature/overcurrent protection
  • -40°C to +125°C junction temperature range

    • Description

    The LP2989LV is a 500 mA fixed-output voltage regulator designed to provide high performance and low noise in applications requiring output voltages < 2V.

    Output noise can be reduced to 18µV (typical) by connecting an external 10 nF capacitor to the bypass pin.

    Using an optimized VIP™ (Vertically Integrated PNP) process, the LP2989LV delivers superior performance:

    Ground Pin Current: Typically 3 mA @ 500 mA load, and 110 µA @ 100 µA load.

    Sleep Mode: The LP2989LV draws less than 0.8 µA quiescent current when shutdown pin is pulled low.

    Error Flag: The built-in error flag goes low when the output drops approximately 5% below nominal.

    Precision Output: Guaranteed output voltage accuracy is 0.75% ("A" grade) and 1.25% (standard grade) at room temperature.

    For output voltages >= 2V, see LP2989 datasheet.


    Applications

  • Notebook/Desktop PC
  • PDA/Palmtop Computer
  • Wireless Communication Terminals
  • SMPS Post-Regulator

    • Also Recommended
    LP2989▲For Output Voltages >= 2.5V
    LP38691▲PowerWise® 500mA Low Dropout CMOS Linear Regulator
    LP38693▲PowerWise® 500mA Low Dropout CMOS Linear Regulator With Enable



    Typical Application
    *click for larger image


    		Block Diagram
    click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLP2989LV LP2989 LP38691 LP38693
    Output Current500 mA 500 mA 500 mA 500 mA
    Output Min1.8 Volt 2.5, 3.3, 3, 2.8, 5 Volt
    Input Min Voltage2.1 Volt 5.31, 3.11, 3.61, 2.81 Volt 2.7 Volt 2.7 Volt
    Input Max Voltage16 Volt 16 Volt 10 Volt 10 Volt
    Dropout Voltage0.31 Volt 0.31 Volt 0.725, 0.450, 0.550 Volt 0.725, 0.450, 0.425, 0.550 Volt
    Adjustable OutputNo No No No
    Quiescent Current0.11 mA 0.11 mA 0.055 mA 0.055 mA
    On/Off PinYes Yes No Yes
    PowerGood / Error FlagYes Yes No No
    RegTypeLDO LDO LDO LDO
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 125 deg C
    Output Voltage1.8 Volt 2.5, 3.3, 3, 2.8, 5 Volt 1.8, 5.0, 5.5, 2.5, 3.3 Volt 1.8, 5.0, 2.5, 3.3 Volt
    Output Max1.8 Volt 2.5, 3.3, 3, 2.8, 5 Volt
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LP2989AIM-1.8/NOPB

    LP2989AIM-1.8

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide136
    MOUSERWorldwide380
    NEWARKAmericas337
    		$0.96 each at 1K+ pcsrail
    of
    95
    LP2989AIMX-1.8/NOPB

    LP2989AIMX-1.8

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.96 each at 1K+ pcsreel
    of
    2500
    LP2989IM-1.8/NOPB

    LP2989IM-1.8

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide231
    AVNET-EMWorldwide357
    DIGI-KEYWorldwide0
    MOUSERWorldwide380
    TAYLORAmericas231
    		$0.94 each at 1K+ pcsrail
    of
    95
    LP2989IMX-1.8/NOPB

    LP2989IMX-1.8

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.94 each at 1K+ pcsreel
    of
    2500

    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 LP2989LV.

    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 LP2989LV is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LP2989AIM-1.8/NOPB

    LP2989AIM-1.8
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    2989A
    IM1.8
    LP2989AIMX-1.8/NOPB

    LP2989AIMX-1.8
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    2989A
    IM1.8
    LP2989IM-1.8/NOPB

    LP2989IM-1.8
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    2989
    IM1.8
    LP2989IMX-1.8/NOPB

    LP2989IMX-1.8
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    2989
    IM1.8

    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 LP2989LV.

    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 LP2989LV is located at RoHS Status.

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LP2989AIM-1.8VIP1+03301000382000011083935430
    LP2989AIMX-1.8VIP1+03301000382000011083935430
    LP2989IM-1.8VIP1+03301000382000011083935430
    LP2989IMX-1.8VIP1+03301000382000011083935430

    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 LP2989LV.

    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 LP2989LV is located at RoHS Status.

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