Texas Instruments LM26001B Handleiding

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LM26001B

SW

SW

BOOT

FB

COMP

VDD

GND

FPWM

FREQ

SS

SYNC

EN

PGOOD

VIN

2

3

13

9

144

10

6

11

5

8

7

15

16

VIN

VOUT

VIN

VBIAS

112

C1

C5

R3

C8

R5

L

C4

R2

R1

C6

C3

R4

D1

VDD

17

EP

R6

EN

SYNC

+

LM26001B

www.ti.com

SNVS491B–MAY2007–REVISEDAPRIL2013

LM26001B1.5ASwitchingRegulatorwithHighEfficiencySleepMode

CheckforSamples:LM26001B

1

FEATURES

DESCRIPTION

TheLM26001Bisaswitchingregulatordesignedfor

2

•HighEfficiencySleepMode

thehighefficiencyrequirementsofapplicationswith

•40µATypicalIqinSleepMode

stand-bymodes.Thedevicefeaturesalow-current

•10µATypicalIqinShutdownMode

sleepmodetomaintainefficiencyunderlight-load

conditionsandcurrent-modecontrolforaccurate

•3.0VMinimumInputVoltage

regulationoverawideinputvoltagerange.Quiescent

•4.0Vto18VContinuousInputRange

currentisreducedto10µAtypicallyinshutdown

•2.0%ReferenceAccuracy

modeandlessthan40µAinsleepmode.Forced

PWMmodeisalsoavailabletodisablesleepmode.

•Cycle-by-CycleCurrentLimit

•AdjustableFrequency(150kHzto500kHz)

TheLM26001Bcandeliverupto1.5Aofcontinuous

loadcurrentwithafixedcurrentlimit,throughthe

•SynchronizabletoanExternalClock

internalN-channelswitch.Theparthasawideinput

•PowerGoodFlag

voltagerangeof4.0Vto18Vandcanoperatewith

•ForcedPWMFunction

inputvoltagesaslowas3Vduringlinetransients.

•AdjustableSoft-Start

Operatingfrequencyisadjustablefrom150kHzto

•HTSSOP-16ExposedPadPackage

500kHzwithasingleresistorandcanbe

synchronizedtoanexternalclock.

•ThermalShutDown

OtherfeaturesincludePowergood,adjustablesoft-

APPLICATIONS

start,enablepin,inputunder-voltageprotection,and

aninternalbootstrapdiodeforreducedcomponent

•AutomotiveTelematics

count.

•NavigationSystems

•In-DashInstrumentation

•BatteryPoweredApplications

•Stand-byPowerforHomeGateways/Set-Top

Boxes

TypicalApplicationCircuit

1

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

2Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2007–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Product specificaties