Texas Instruments LP38690 Handleiding

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LP38692

IN

OUT

SNS

**

GND

1 PF *

1 PF *

V

OUT

V

IN

V

EN

EN

LP38690

IN

OUT

SNS

**

GND

V

OUT

V

IN

1 µF*

1 µF*

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Reference

Design

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

LP38690

,

LP38692

SNVS322M–DECEMBER2004–REVISEDDECEMBER2015

LP38690,LP386921-ALowDropoutCMOSLinearRegulators

StablewithCeramicOutputCapacitors

1

1Features

1

•WideInputVoltageRange(2.7Vto10V)

•2.5%OutputAccuracy(25°C)

•LowDropoutVoltage:450mVat1A

(typical,5V

OUT

)

•Precision(Trimmed)BandgapReference

•EnsuredSpecificationsfor–40°Cto125°C

•1-µAOff-StateQuiescentCurrent

•ThermalOverloadProtection

•FoldbackCurrentLimiting

•3-LeadTO-252,5-LeadSOT-223,and6-Bump

WSONPackages

•EnablePin(LP38692)

•GroundPinCurrent:55µA(typical)atFullLoad

•PrecisionOutputVoltage:2.5%(25°C)Accuracy

2Applications

•HardDiskDrives

•NotebookComputers

•BatteryPoweredDevices

•PortableInstrumentation

3Description

TheLP38690andLP38692low-dropoutCMOSlinear

regulatorsprovidetightoutputtolerance(2.5%

typical),extremelylowdropoutvoltage(450mVata

1-Aloadcurrent,V

OUT

=5V),andexcellentAC

performanceutilizingultralowESRceramicoutput

capacitors.

ThelowthermalresistanceoftheWSON,SOT-223,

andTO-252packagesallowthefulloperatingcurrent

tobeusedeveninhighambienttemperature

environments.

TheuseofaPMOSpowertransistormeansthatno

DCbasedrivecurrentisrequiredtobiasitallowing

groundpincurrenttoremainbelow100µA

regardlessofloadcurrent,inputvoltage,oroperating

temperature.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

LP38690

TO-252(3)6.58mmx6.10mm

WSON(6)3.00mmx3.00mm

LP38692

SOT-223(5)6.50mmx3.56mm

WSON(6)3.00mmx3.00mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

SimplifiedSchematicforLP38690

*Minimumvaluerequiredforstability.

**WSONpackagedevicesonly.

SimplifiedSchematicforLP38692

*Minimumvaluerequiredforstability.

**WSONpackagedevicesonly.

Product specificaties