Texas Instruments LMV7231 Handleiding

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Controller

(FPGA)

+

-

+

-

Channel 1

UV

1

OV6

OV5

OV4

OV3

OV2

V+

OV1

+IN1

-IN1

GND

AO

CO1

*

*

COPOL

UV6

UV5

UV4

UV3

UV2

UV1

* Open Drain

AOSEL

*

OV1

Channel 6

+IN6

-IN6

CO6

+400mV

REF

LMV7231

COPOL

REF

UV6OV6

REF

Monitored Voltage #1

Monitored Voltage #6

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LMV7231

SNOSB45F–FEBRUARY2010–REVISEDJANUARY2016

LMV7231HexWindowComparatorWith1.5%Precisionand400-mVReference

1

1Features

1

•(ForV

S

=3.3V±10%,TypicalUnlessOtherwise

Noted)

•UndervoltageandOvervoltageDetection

•HighAccuracyVoltageReference:400mV

•ThresholdAccuracy:±1.5%(Maximum)

•WideSupplyVoltageRange2.2Vto5.5V

•InputandOutputVoltageRangeAboveV+

•InternalHysteresis:6mV

•PropagationDelay:2.6µsto5.6µs

•SupplyCurrent7.7µAPerChannel

•24-LeadWQFNPackage

•TemperatureRange:–40°Cto+125°C

2Applications

•PowerSupplyVoltageMonitoring

•BatteryMonitoring

•HandheldInstruments

•RelayDriving

•IndustrialControlSystems

3Description

TheLMV7231deviceisa1.5%accurateHex

WindowComparatorwhichcanbeusedtomonitor

powersupplyvoltagesoranyotheranalogoutput,

suchasananalogtemperaturesensororcurrent-

senseamplifier.Thedeviceusesaninternal400-mV

referenceforthecomparatortripvalue.The

comparatorsetpointscanbesetthroughexternal

resistordividers.TheLMV7231has6outputs(CO1

toCO6)thatsignalanundervoltageorovervoltage

eventforeachpowersupplyinput.Anoutput(AO)is

alsoprovidedtosignalwhenanyofthepowersupply

inputshaveanovervoltageorundervoltageevent.

Thisabilitytosignalanundervoltageorovervoltage

eventfortheindividualpowersupplyinputs,in

additiontoanoutputtosignalsuchaneventonany

ofthepowersupplyinputs,addsunparalleledsystem

protectioncapability.

The2.2-Vto5.5-Vpowersupplyvoltagerange,low

supplycurrent,andinputoroutputvoltagerange

aboveV+maketheLMV7231idealforawiderange

ofpowersupplymonitoringapplications.Operationis

ensuredoverthe–40°Cto+125°Ctemperature

range.Thedeviceisavailableina24-pinWQFN

package.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LMV7231WQFN(24)4.00mm×4.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

SimplifiedTypicalApplication

Product specificaties