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LTC3541-2 Datasheet(PDF) 7 Page - Linear Technology |
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LTC3541-2 Datasheet(HTML) 7 Page - Linear Technology |
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7 / 20 page  LTC3541-2 35412fb PI FU CTIO S VIN (Pin 1):MainSupplyPin.Thispinmustbeclosely decoupledtoGNDwitha10µForgreatercapacitor. ENBUCK (Pin 2):BuckEnablePin.Thispinenablesthe buckregulatorwhendriventoalogichigh. VOUT(Pin3):BuckRegulatorOutputPin.Thispinreceives thebuckregulator’soutputvoltage. NC(Pin4):NotConnected.Thispinmustnotbeconnected orcapacitivelyloaded. LVOUT (Pin 5):VLDO/LinearRegulatorOutputPin.This pinprovidestheregulatedoutputvoltagefromtheVLDO orlinearregulator. LVIN (Pin 6):VLDO/LinearRegulatorInputSupplyPin. ThispinprovidestheinputsupplyvoltagefortheVLDO powerFET. GND (Pin 7):AnalogGroundPin. MODE (Pin 8):BuckModeSelectionPin.Thispinenables buckPulse-Skipoperationwhendriventoalogichigh andenablesbuckBurstModeoperationwhendrivento alogiclow. ENVLDO (Pin 9): VLDO/Linear Regulator Enable Pin. Whendriventoalogichigh,thispinenablesthelinear regulatorwhentheENBUCKpinisdriventoalogiclow, andenablestheVLDOregulatorwhentheENBUCKpinis driventoalogichigh. SW (Pin 10): Switch Node Pin. This pin connects the internalmainandsynchronouspowerMOSFETswitches totheexternalinductorforthebuckregulator. Exposed Pad (Pin 11): Ground Pin. This pin must be solderedtothePCBtoprovidebothelectricalcontactto groundandgoodthermalcontacttothePCB. Note:Table1detailsthetruthtableforthecontrolpins oftheLTC3541-2. Table 1. LTC3541-2 Control Pin Truth Table PIN NAME OPERATIONAL DESCRIPTION ENBUCK ENVLDO MODE 0 0 X LTC3541-2PoweredDown 0 1 X BuckPoweredDown,VLDOPowered Down,LinearRegulatorEnabled 1 0 0 BuckEnabled,VLDOPoweredDown, LinearRegulatorPoweredDown, BurstModeOperation 1 0 1 BuckEnabled,VLDOPoweredDown, LinearRegulatorPoweredDown, Pulse-SkipModeOperation 1 1 0 BuckEnabled,VLDOEnabled,Linear RegulatorPoweredDown,BurstMode Operation 1 1 1 BuckEnabled,VLDOEnabled,Linear RegulatorPoweredDown,Pulse-Skip ModeOperation |
Similar Part No. - LTC3541-2_15 |
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Similar Description - LTC3541-2_15 |
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