Texas Instruments LM25061 Handleiding

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Power

Good

UVLO/EN

PWRGNDTIMER

PGD

OUT

VINSENSEGATE

LM25061

V

OUT

V

SYS

FB

V

PGD

GND

LM25061

www.ti.com

SNVS611E–FEBRUARY2011–REVISEDMARCH2013

LM25061PositiveLowVoltagePowerLimitingHotSwapController

CheckforSamples:LM25061

1

FEATURES

APPLICATIONS

2

•OperatingRange:+2.9Vto+17V

•ServerBackplaneSystems

•In-rushCurrentLimitforSafeBoardInsertion•BaseStationPowerDistributionSystems

intoLivePowerSources

•SolidStateCircuitBreaker

•ProgrammableMaximumPowerDissipationin

theExternalPassDevicePACKAGE

•AdjustableCurrentLimit

•VSSOP-10

•CircuitBreakerFunctionforSevereOver-

DESCRIPTION

CurrentEvents

TheLM25061positivehotswapcontrollerprovides

•InternalHighSideChargePumpandGate

intelligentcontrolofthepowersupplyvoltagetothe

DriverforExternalN-ChannelMOSFET

loadduringinsertionandremovalofcircuitcardsfrom

•AdjustableUnder-VoltageLockout(UVLO)and

alivesystembackplaneorother"hot"powersources.

Hysteresis

TheLM25061providesin-rushcurrentcontroltolimit

•AdjustableOutputVoltageMonitoringand

systemvoltagedroopandtransients.Thecurrentlimit

andpowerdissipationintheexternalseriespassN-

Hysteresis

ChannelMOSFETareprogrammable,ensuring

•InitialInsertionTimerAllowsRingingand

operationwithintheSafeOperatingArea(SOA).The

TransientstoSubsideAfterSystem

POWERGOODoutputindicateswhentheoutput

Connection

voltageexceedsaprogrammablethreshold.The

•ProgrammableFaultTimerAvoidsNuisance

inputunder-voltagelevelandhysteresisare

Trips

programmable,aswellastheinitialinsertiondelay

timeandfaultdetectiontime.TheLM25061-1latches

•ActiveHighOpenDrainPOWERGOODOutput

offafterafaultdetection,whiletheLM25061-2

•AvailableinLatchedFaultandAutomatic

automaticallyrestartsatafixeddutycycle.The

RestartVersions

LM25061isavailableina10pinVSSOPpackage.

TypicalApplication

Figure1.PositivePowerSupplyControl

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2011–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties