L4921

Features: .VERYLOWDROPVOLTAGE.ADJUSTABLEOUTPUTVOLTAGEFROM 1.25VTO20V.400mAOUTPUTCURRENT.LOWQUIESCENTCURRENT.REVERSEVOLTAGEPROTECTION.+60/? 60VTRANSIENTPEAKVOLTAGE PROTECTION.SHORTCIRCUITPROTECTIONWITHFOLD- BACKCHARACTERISTICS.THERMALSHUT-DOWNPinoutSpecifications Symbol Parameter Value ...

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L4921 Picture
SeekIC No. : 004389141 Detail

L4921: Features: .VERYLOWDROPVOLTAGE.ADJUSTABLEOUTPUTVOLTAGEFROM 1.25VTO20V.400mAOUTPUTCURRENT.LOWQUIESCENTCURRENT.REVERSEVOLTAGEPROTECTION.+60/? 60VTRANSIENTPEAKVOLTAGE PROTECTION.SHORTCIRCUITPROTECTIONWI...

floor Price/Ceiling Price

Part Number:
L4921
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2020/4/3

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Product Details

Description



Features:

.VERYLOWDROPVOLTAGE
.ADJUSTABLEOUTPUTVOLTAGEFROM 1.25VTO20V
.400mAOUTPUTCURRENT
.LOWQUIESCENTCURRENT
.REVERSEVOLTAGEPROTECTION
.+60/? 60VTRANSIENTPEAKVOLTAGE PROTECTION
.SHORTCIRCUITPROTECTIONWITHFOLD- BACKCHARACTERISTICS
.THERMALSHUT-DOWN



Pinout

  Connection Diagram


Specifications

Symbol
Parameter
Value
Unit

DCInputOperatingVoltage
DCReverseInputVoltage
TransientInputOvervoltages:
LoadDump:
5ms riseT 10ms,
f FallTimeConstant=100ms,
Rsource<0.5
FieldDecay:
5mstfall10ms,Rsource <10
rRiseTimeConstant=33ms

35
V


Tj,Tstg
JunctionandStorageTemperatureRange
-55to150



Description

TheL4920andL4921 are adjustable voltageregu- latorswithaverylowvoltagedrop(0.4Vtyp.at0.4A Tj=25),lowquiescentcurrentandcomprehen- siveon-chipprotection.
TheL4920andL4921 are protectedagainstloaddumpand fielddecaytransients,polarityreversalandover heating.

Afoldbackcurrentlimiterprotectsagainstloadshort circuits.

Theoutputvoltageisadjustablethroughanexternal dividerfrom1.25Vto20V.Theminimumoperating inputvoltageis5.2V(TJ=25).

Theseregulatorsaredesignedforautomotive,in- dustrialandconsumerapplicationswherelowcon- sumptionisparticularlyimportant.

Inbatterybackupandstandbyapplicationsthelow consumptionofthesedevicesextendsbatterylife.




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