Texas Instruments LP8720 Handleiding
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LDO1
1 µF
1.2V-3.3V
@300 mA
VIN1
VIN2
1 µF
1.2V-3.3V
@300 mA
V
DD
1.2V-3.3V
@300 mA
1 µF
LDO3
1 µF
0.8V-2.85V
@300 mA
LDO4
LDO5
1 µF
1.2V-3.3V
@300 mA
LDO2
A-type
LDO1
D-type
LDO3
A-type
LDO4
LO-type
LDO5
D-type
VBATT
V
BATT
2.2 µF2.2 µF
-+
LP8720
Voltage
Reference
Thermal
Shutdown
2.2 µF
LDO2
0.8V...2.3V
@400mA
Buck
10 µF
2.2 µH
SW
FB
GNDB
VINB
10 µF
V
BATT
10k1.5k1.5k
V
SI
SDA
IRQ_N
SCL
EN
DVS
Serial Interface
and
Control
V
BATT
DEFSEL
V
BATT
IDSEL
GND
LP8720
www.ti.com
SNVS575B–JULY2008–REVISEDMAY2013
LP8720OneStep-DownDC-DCandFiveLinearRegulatorswithI
2
C-CompatibleInterface
CheckforSamples:LP8720
1
FEATURES
APPLICATIONS
2
•5LowNoiseLDO’sforupto300mA
•CellularHandsets
•OneHigh-EfficiencySynchronousMagnetic•PortableHand-HeldProducts
BuckRegulator,I
OUT
400mA
DESCRIPTION
–HighEfficiencyPFMMode@LowI
OUT
TheLP8720isamulti-function,programmablePower
–AutoModePFM/PWMSwitch
ManagementUnit,optimizedforsubblockpower
–LowInductance2.2µH@2MHzClock
requirementsolutions.Thisdeviceintegratesone
–DynamicVoltageScaleControl
highlyefficient400mAstep-downDC-DCconverter
withDynamicVoltageScale(DVS),fivelow-noiselow
•I
2
C-CompatibleInterfacefortheControllingof
dropout(LDO)voltageregulators,anda400KHzI
2
C-
InternalRegisters
compatibleinterfacetoallowahostcontrolleraccess
•20-Bump2.5x2.0mmDSBGAPackage
totheinternalcontrolregistersoftheLP8720.
Additionally,theLP8720featuresprogrammable
KEYSPECIFICATIONS
power-onsequencing.
•ProgrammableV
OUT
from0.8Vto2.3VonDC-
LDOregulatorsprovidehighPSRRandlownoise
DC
ideallysuitedforsupplyingpowertobothanalogand
digitalloads.Thepackagewillbethesmallest2.5
•AutomaticSoftStartonDC-DC
mmx2.0mm20-bumpDSBGApackage.
•200mVTypDropoutVoltageat300mAon
LDO’s
•2%(Typ)OutputVoltageAccuracyonLDO’s
TypicalApplicationDiagram
1
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
2Alltrademarksarethepropertyoftheirrespectiveowners.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
Copyright©2008–2013,TexasInstrumentsIncorporated
ProductsconformtospecificationsperthetermsoftheTexas
Instrumentsstandardwarranty.Productionprocessingdoesnot
necessarilyincludetestingofallparameters.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LP8720 |
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