MYRGM-X中文资料村田数据手册PDF规格书

■GENERALDESCRIPTION

MYRGM080200X41RAandMYRGM080200C41RAisasynchronousstep-downminiDC/DCconverter

whichintegratesaninductorandacontrolICinonetinypackage(3.1mm×4.7mm,h=1.3mm).

Aninternalcoilsimplifiesthecircuitandenablesminimizationofnoiseand

Otheroperationaltroubleduetothecircuitwiring.

Awideoperatingvoltagerangeof2.7Vto6.0Venablessupportforapplications

Thatrequireanexternallysetoutputvoltagecanbeselected.

TheMYRGM-X/Cseriesusesynchronousrectificationatanoperatingfrequencyof2.4MHz.

PWMcontrol(MYRGM080200X41RA)orautomaticPWM/PFMswitchingcontrol(MYRGM080200C41RA)canbeselected.

TheMYRGM080200X41RAhasafixedfrequency,enablingthesuppressionofoutputripple.

TheMYRGM080200C41RAachieveshighefficiencywhileholdingdownoutputripple

acrossthefullrangeofloads,fromlighttoheavy,enablingtheextensionofbatteryoperationtime.

Theserieshaveahighspeedsoft-startasfastas1msintypicalforquickturn-on.Withthebuilt-inUVLO(UnderVoltageLock

Out)function,theinternalP-channeldrivertransistorisforcedOFFwheninputvoltagebecomes2.4Vorlower.It’ssuitablefor

large-currentapplicationduetolimitcurrentisconfigured4.0Aintypical.TheintegratedCLdischargefunctionwhichenablesthe

electricchargeattheoutputcapacitorCLtobedischargedviatheinternaldischargeswitchlocatedbetweentheLXandGND

pins.DuetoCLdischargefunction,malfunctiononLXispreventedwhenStand-bymode.

: 3.1mm×4.7mm,h=1.3mm

:2.7V～6.0V

: 0.9V～VIN (FBVoltage=0.8V±2)

: 94 (VIN=5.0V,VOUT=3.3V)

■FEATURES

PackageSize InputVoltage

Output Voltage

High Efficiency Output Current Switching FrequencyMaximum Duty Cycle Control Methods

Functions

:2.0A

: 2.4MHz(±15)

:100

: PWM MYRGM080200X41RA)

PWM/PFM(MYRGM080200C41RA)

: Current Limit Circuit (automatic return) Soft-Start CircuitBuilt-In

CL Discharge,UVLO

OutputCapacitor: Low ESR Ceramic Capacitor OperatingAmbient Temperature :-40℃～+85℃

EnvironmentallyFriendly : EU RoHS Compliant, PbFreeHalogen Free

■APPLICATIONS

●NotePCs

●Printers

●TabletPCs

●PND(Portable NavigationDevice)