Texas Instruments LM43600 Handleiding
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EN 55022 Class B Limit
Frequency (MHz)
dBuV
80
70
60
50
40
30
20
10
30
Evaluation Board Emissions
1000100
Vertical Polarization
Horizontal Polarization
SWVIN
PGND
CBOOT
VCC
BIAS
SYNC
RT
ENABLE
SS/TRK
AGND
FB
LM43600
V
IN
C
OUT
C
BOOT
C
IN
C
VCC
V
OUT
C
BIAS
R
FBT
R
FBB
C
FF
L
PGOOD
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Folder
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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
LM43600
SNVSA43B–AUGUST2014–REVISEDSEPTEMBER2017
LM436003.5-Vto36-V,0.5-ASynchronousStep-DownVoltageConverter
1
1Features
1
•33-µAQuiescentCurrentinRegulation
•HighEfficiencyatLightLoad(DCMandPFM)
•MeetsEN55022/CISPR22EMIstandards
•IntegratedSynchronousRectification
•AdjustableFrequencyRange:200kHzto2.2MHz
(500kHzdefault)
•FrequencySynchronizationtoExternalClock
•InternalCompensation
•StablewithAlmostAnyCombinationofCeramic,
Polymer,Tantalum,andAluminumCapacitors
•Power-GoodFlag
•SoftStartintoPre-BiasedLoad
•InternalSoftStart:4.1ms
•ExtendableSoft-StartTimebyExternalCapacitor
•OutputVoltageTrackingCapability
•PrecisionEnabletoProgramSystemUVLO
•OutputShort-CircuitProtectionwithHiccupMode
•OvertemperatureThermalShutdownProtection
•CreateaCustomDesignUsingtheLM43600With
theWEBENCH
®
PowerDesigner
2Applications
•IndustrialPowerSupplies
•TelecommunicationsSystems
•Sub-AMBandAutomotive
•GeneralPurposeWideV
IN
Regulation
•HighEfficiencyPoint-Of-LoadRegulation
3Description
TheLM43600regulatorisaneasy-to-use
synchronousstep-downDC-DCconvertercapableof
drivingupto0.5Aofloadcurrentfromaninput
voltagerangingfrom3.5Vto36V(42Vtransient).
TheLM43600providesexceptionalefficiency,output
accuracyanddrop-outvoltageinaverysmall
solutionsize.Anextendedfamilyisavailablein1-A,
2-Aand3-Aloadcurrentoptionsinpin-to-pin
compatiblepackages.Peakcurrentmodecontrolis
employedtoachievesimplecontrolloop
compensationandcycle-by-cyclecurrentlimiting.
Optionalfeaturessuchasprogrammableswitching
frequency,synchronization,power-goodflag,
precisionenable,internalsoftstart,extendablesoft
start,andtrackingprovideaflexibleandeasy-to-use
platformforawiderangeofapplications.
Discontinuousconductionandautomaticfrequency
modulationatlightloadsimprovelightloadefficiency.
Thefamilyrequiresfewexternalcomponentsandpin
arrangementallowssimple,optimumPCBlayout.
Protectionfeaturesincludethermalshutdown,V
CC
undervoltagelockout,cycle-by-cyclecurrentlimit,and
outputshort-circuitprotection.TheLM43600deviceis
availableinthe16-pinHTSSOP(PWP)leaded
package(6.6mm×5.1mm×1.2mm)with0.65-mm
leadpitch.Pin-to-pincompatiblewithLM46000,
LM46001,LM46002,LM43601,LM43602,and
LM43603devices.
DeviceInformation
(1)
PARTNUMBERPACKAGEBODYSIZE(NOM)
LM43600HTSSOP(16)6.60mm×5.10mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
4SimplifiedSchematic
RadiatedEmissionGraph
withV
IN
=12V,V
OUT
=3.3V,F
SW
=500kHz,I
OUT
=
0.5A
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LM43600 |
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