Texas Instruments LP5952 Bedienungsanleitung

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V

BATT

: 2.7 V to 5.5 V

IN

OUT

GND

EN

-+

For example,

1.5 V

1 PF

BATT

LP5952

Pre-

regulator

Li-Ion

or

3-cell

NiMh/NiCd

2.2 PF

For example, 1.2 V

A1

B2C3

A3

C1

Load

0 to 350 mA

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

LP5952

SNVS469F–OCTOBER2006–REVISEDDECEMBER2015

LP5952350-mADual-RailLinearRegulator

1Features3Description

TheLP5952isadual-supply-raillinearregulator

1

•InputVoltageRange:0.7Vto4.5V

optimizedforpoweringultralow-voltagecircuitsfroma

•2.5V≤V

BATT

≤5.5V

singleLi-Ioncellor3-cellNiMH/NiCdbattery.

•0.5V≤V

OUT

≤2V

Inthetypicalpost-regulationapplicationV

BATT

is

•Ensured350-mAOutputCurrent

directlyconnectedtothebattery(range2.5Vto

•ForI

LOAD

=350mA:

5.5V),andV

IN

issuppliedbytheoutputvoltageof

theDC-DCconverter(range0.7Vto4.5V).

–V

BATT

≥V

OUT(NOM)

+1.5Vor2.5V

(WhicheverisHigher)

Thedeviceofferssuperiordropoutandtransient

•ForI

LOAD

=150mA:

featurescombinedwithverylowquiescentcurrents.

Inshutdownmode(Enable(EN)pinpulledlow)the

–V

BATT

≥V

OUT(NOM)

+1.3Vor2.5V

deviceturnsoffandreducesbatteryconsumptionto

(WhicheverisHigher)

0.1µA(typical).TheLP5952alsofeaturesinternal

•ExcellentLoadTransientResponse:±15mV

protectionagainstovertemperature,overcurrent,and

Typical

undervoltageconditions.

•ExcellentLineTransientResponse:±1mVTypical

Dependinguponapplication,onlyoneortwotiny

•50-µATypicalQuiescentCurrentfromV

BATT

surface-mountexternalcomponentsarerequired;

performanceisspecifiedfora–40°Cto+125°C

•10-µATypicalQuiescentCurrentfromV

IN

junctiontemperaturerange.Thedeviceisavailablein

•0.1-µATypicalQuiescentCurrentinShutdown

fixedoutputvoltagesfrom0.5Vto2V.For

•Noisevoltage=100µV

RMS

Typical

availability,pleasecontactyourlocalTexas

•OperatesfromaSingleLi-IonCellor3-Cell

Instrumentssalesoffice.

NiMH/NiCdBattery

DeviceInformation

(1)

•Thermal-OverloadandShort-CircuitProtection

PARTNUMBERPACKAGEBODYSIZE(NOM)

DSBGA(5)1.326mm×0.96mm

2Applications

LP5952

USON(6)2.00mm×2.00mm

•MobilePhones

(1)Forallavailablepackages,seetheorderableaddendumat

•Hand-HeldRadios

theendofthedatasheet.

•PersonalDigitalAssistants

•Palm-TopPCs

•PortableInstruments

•Battery-PoweredDevices

TypicalApplicationCircuit

1

AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

Produktspezifikationen