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?SemiconductorComponentsIndustries,LLC,2010
November,2010--Rev.8
1
PublicationOrderNumber:
NCP1501/D
NCP1501
DualModePWM/Linear
BuckConverter
TheNCP1501isadualmoderegulatorthatoperateseitherasa
PWMBuckConverterorasaLowDropOutLinearRegulator.Ifa
synchronizationsignalispresent,theNCP1501operatesasacurrent
mode PWM converter with synchronous rectification. The
synchronizationsignalallowstheusertocontrolthelocationofthe
spuriousfrequencynoisegeneratedbyaPWMconverter.Linearmode
isactivewhenasynchronizationsignalisnotpresent.TheNCP1501
configurationallowsanefficienthighpoweroperationandlownoise
duringsystemsleepmodes.
Features
?SPAN class="pst NCP1501DMR2G_2650402_4"> SynchronousRectificationforHigherEfficiencyinPWMMode
?SPAN class="pst NCP1501DMR2G_2650402_4"> LinearModeOperationforLowNoiseOutputatLowLoads
?SPAN class="pst NCP1501DMR2G_2650402_4"> IntegratedMOSFETsandFeedbackCircuits
?SPAN class="pst NCP1501DMR2G_2650402_4"> Cycle--by--CyclePeakCurrentLimitof800mA(typ)
?SPAN class="pst NCP1501DMR2G_2650402_4"> AutomaticSwitchingBetweenPWMandLinearMode
?SPAN class="pst NCP1501DMR2G_2650402_4"> OperatingFrequencyRangeof500to1000kHz
?SPAN class="pst NCP1501DMR2G_2650402_4"> OptimizedforCeramicCapacitorsandLowProfileInductors
?SPAN class="pst NCP1501DMR2G_2650402_4"> ThermalLimitProtection
?SPAN class="pst NCP1501DMR2G_2650402_4"> Built--inSlopeCompensationforCurrentModePWMConverter
?SPAN class="pst NCP1501DMR2G_2650402_4"> FixedOutputVoltagesof1.05V,1.35V,1.57V,1.8V
?SPAN class="pst NCP1501DMR2G_2650402_4"> ShutdownCurrentConsumptionof0.2mA
?SPAN class="pst NCP1501DMR2G_2650402_4"> InternalSoftStart
?SPAN class="pst NCP1501DMR2G_2650402_4"> TransistorCount:3500
?SPAN class="pst NCP1501DMR2G_2650402_4"> Pb--FreePackageisAvailable
TypicalApplications
?SPAN class="pst NCP1501DMR2G_2650402_4"> CellularPhones
?SPAN class="pst NCP1501DMR2G_2650402_4"> PDAs
?SPAN class="pst NCP1501DMR2G_2650402_4"> Pagers
?SPAN class="pst NCP1501DMR2G_2650402_4"> SuppliesforDSPCores
?SPAN class="pst NCP1501DMR2G_2650402_4"> PortableApplications
Figure1.TypicalApplicationsCircuit
C
OUT
NCP1501
8
7
6
5
1
2
3
4
SHD
SYN
V
O
LX
CB0
CB1
GND
V
in
C
IN
10mH
L
10m
10m
V
bat
V
out
8
7
6
5
1
2
3
4
Micro8?/SPAN>
(MSOP--8)
DMSUFFIX
CASE846A
8
1
MARKING
DIAGRAM
PINCONNECTIONS
SHD
SYN
V
O
LX
CB0
CB1
GND
V
in
Device    Package   Shipping
 
ORDERINGINFORMATION
NCP1501DMR2   Micro8  4000/Tape&Reel
(TopView)
http://onsemi.com
 Forinformationontapeandreelspecifications,
includingpartorientationandtapesizes,please
refertoourTapeandReelPackagingSpecifications
Brochure,BRD8011/D.
NCP1501DMR2G  Micro8
(Pb--Free)
4000/Tape&Reel
1501
AYWG
G
1
8
A    =AssemblyLocation
Y    =Year
W   =WorkWeek
G    =Pb--FreePackage
(Note:Microdotmaybeineitherlocation)
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