Texas Instruments LM5010A Handleiding

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VIN

SW

BST

LM5010A

VCC

SS

RON/SD

6V - 75V

Input

C1

R

ON

R2

R1

C2

V

OUT

L1

C3

C4

D1

C6

RTN

ISEN

SGND

FB

SHUTDOWN

R3

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LM5010A

,

LM5010A-Q1

SNVS376F–OCTOBER2005–REVISEDMAY2016

LM5010A,LM5010A-Q1High-Voltage1-AStep-DownSwitchingRegulator

1

1Features

1

•LM5010A-Q1QualifiedforAutomotive

Applications

•AEC-Q100QualifiedWiththeFollowingResults:

–DeviceTemperatureGrade1:–40°Cto125°C

AmbientOperatingTemperatureRange

–DeviceTemperatureGrade0:–40°Cto150°C

AmbientOperatingTemperatureRange

–DeviceHBMESDClassificationLevel2

–DeviceCDMESDClassificationLevelC5

•Wide6-Vto75-VInputVoltageRange

•ValleyCurrentLimitat1.25A

•ProgrammableSwitchingFrequencyUpTo1MHz

•Integrated80-VN-ChannelBuckSwitch

•IntegratedHighVoltageBiasRegulator

•NoLoopCompensationRequired

•Ultra-FastTransientResponse

•NearlyConstantOperatingFrequencyWithLine

andLoadVariations

•AdjustableOutputVoltage

•2.5-V,±2%FeedbackReference

•ProgrammableSoft-Start

•ThermalShutdown

•ExposedThermalPadforImprovedHeat

Dissipation

2Applications

•Non-IsolatedTelecommunicationsRegulators

•SecondarySidePostRegulators

•AutomotiveElectronics

3Description

TheLM5010Axstep-downswitchingregulatorisan

enhancedversionoftheLM5010withtheinput

operatingrangeextendedto6-Vminimum.The

LM5010Axfeaturesallthefunctionsneededto

implementalow-cost,efficient,buckregulator

capableofsupplyinginexcessof1-Aloadcurrent.

Thishigh-voltageregulatorintegratesanN-Channel

BuckSwitch,andisavailableinthermallyenhanced

10-pinWSONand14-pinHTSSOPpackages.The

constantON-timeregulationschemerequiresnoloop

compensationresultinginfastloadtransient

responseandsimplifiedcircuitimplementation.The

operatingfrequencyremainsconstantwithlineand

loadvariationsduetotheinverserelationship

betweentheinputvoltageandtheON-time.The

valleycurrentlimitdetectionissetat1.25A.

Additionalfeaturesinclude:VCCundervoltage

lockout,thermalshutdown,gatedriveundervoltage

lockout,andmaximumdutycyclelimiter.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LM5010Ax

WSON(10)4.00mm×4.00mm

HTSSOP(14)4.40mm×5.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

BasicStep-DownRegulator

Product specificaties