National Semiconductor | High-performance Analog

 

 LMP7300   
Micropower Precision Comparator and Precision Reference with Adjustable Hysteresis from the PowerWise® Family		 Click link to Download

Features

(For VS = 5V, typical unless otherwise noted)

Supply current

13 μA

Propagation delay

4 μs

Input offset voltage

0.3 mV

CMRR

100 dB

PSRR

100 dB

Positive and negative hysteresis control

Adjustable hysteresis

1 mV/mV

Reference voltage

2.048V

Reference voltage accuracy

0.25%

Reference voltage source current

1 mA

Wide supply voltage range

2.7V to 12V

Operating temperature range ambient

−40°C to 125°C

Description

The LMP7300 is a combination comparator and reference with ideal specifications for precision threshold detecting. The precision 2.048V reference comes with a 0.25% maximum error. The comparator features micropower (35 µW), low offset voltage (0.75 mV max), and independent adjustable positive and negative hysteresis.

Hysteresis control for the comparator is accomplished through two external pins. The HYSTP pin sets the positive hysteresis and the HYSTN pin sets the negative hysteresis. The comparator design isolates the VIN source impedance and the programmable hysteresis components. This isolation prevents any undesirable interaction allowing the IC to maintain a precise threshold voltage during level detection.

The combination of low offset voltage, external hysteresis control, and precision voltage reference provides an easy to use micropower precision threshold detector.

The LMP7300 open collector output makes it ideal for mixed voltage system designs. The output voltage upper rail is unconstrained by VCC and can be pulled above VCC to a maximum of 12V. The LMP7300 is a member of the LMP precision amplifier family.


Applications

  • Precision threshold detection
  • Battery monitoring
  • Battery management systems
  • Zero crossing detectors




    • Typical Application
    click for larger image


    		Connection Diagram
    click for larger image



    Typical Performance
    *click for larger image


     

    ParametersValues
    Response Time 4 us
    Output Bus Open Drain
    Supply Min 2.7 Volt
    Supply Max 12 Volt
    Channels 1 Channels
    Offset Voltage max, 25C 0.3 mV
    Output Current 10 mA
    Input Range Not R-R
    Supply Current Per Channel 0.012 mA
    PowerWise Rating 3 48 uA x us
    Max Input Bias Current 3 nA
    Special Features 2.048V Vref, Adj Hyst
    Temperature Min -40 deg C
    Temperature Max 125 deg C
    Function Comparator with Reference
    Automotive Yes
    PowerWise Yes

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMP7300MA/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide328
    AVNET-EMWorldwide215
    DIGI-KEYWorldwide157
    FARNELLEurope and Asia338
    NEWARKAmericas47
    RS COMPONENTSWorldwide40
    TAYLORAmericas328
    		$0.99 each at 1K+ pcsrail
    of
    95
    LMP7300MAX/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.99 each at 1K+ pcsreel
    of
    2500
    LMP7300MM/NOPB


    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide1000
    DIGI-KEYWorldwide0
    TAYLORAmericas1000
    		$0.99 each at 1K+ pcsreel
    of
    1000
    LMP7300MME/NOPB


    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide250
    AVNET-EMWorldwide250
    DIGI-KEYWorldwide472
    FARNELLEurope and Asia35
    MOUSERWorldwide500
    NEWARKAmericas35
    TAYLORAmericas250
    		$0.99 each at 1K+ pcsreel
    of
    250
    LMP7300MMX/NOPB


    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$0.99 each at 1K+ pcsreel
    of
    3500

    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 LMP7300.

    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 LMP7300 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LMP7300MA/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP73
    00MA
    LMP7300MAX/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP73
    00MA
    LMP7300MM/NOPB

    		29.851
    		MINI SOIC81260DetailDownloadspice file
    		ZXTT
    C31A
    LMP7300MME/NOPB

    		29.851
    		MINI SOIC81260DetailDownloadspice file
    		ZXTT
    C31A
    LMP7300MMX/NOPB

    		29.851
    		MINI SOIC81260DetailDownloadspice file
    		ZXTT
    C31A

    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 LMP7300.

    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 LMP7300 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMP7300MAVIP50CLZ305670009450004268146330
    LMP7300MAXVIP50CLZ305670009450004268146330
    LMP7300MMVIP50CLZ305670009450004268146330
    LMP7300MMEVIP50CLZ305670009450004268146330
    LMP7300MMXVIP50CLZ305670009450004268146330

    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 LMP7300.

    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 LMP7300 is located at RoHS Status.

    [Information as of 8-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation