Texas Instruments BQ24140 Handleiding

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VIN

VBUS

LED

VREG

CSIN

VREF

VBAT

OTG

SLRST

DIS

SW1

SW2

PMID1

PMID2

GND

SCL

STAT

SDA

HOST

BOOT1

BOOT2

100 nF

+

PACK-

PACK+

ACAdapter or

Wireless Power

USBAdapter

4.7Fm

4.7Fm

1Fm

4.7Fm

10 kW

10 kW

10 kW

10 kW

10 kW

10 kW

1Hm

0.1Fm

1Fm

100 nF

1Hm

68 mW

10 µF

47 µF

bq24140

www.ti.com

SLUSAO5–OCTOBER2011

FullyIntegratedDual-InputSwitch-ModeOne-CellLi-IonChargerwithFullUSB

ComplianceandUSB-OTGSupport

CheckforSamples:bq24140

1

FEATURES

•ProgrammableChargeParametersThrough

I

2

CInterface(upto3.4Mbps):

•High-EfficiencyMini-USB/ACBatteryCharger

–InputCurrent

forSingle-CellLi-IonandLi-PolymerBattery

Packs

–Fast-Charge/TerminationCurrent

•ChargeBatteryandProvideUSB-OTGSupport

–ChargeVoltage(3.5-4.44V)

attheSameTime

–SafetyTimerwithResetControl

•High-AccuracyVoltageandCurrentRegulation

–SafetyTimerwithResetControl

–InputCurrentRegulationAccuracy:±5%

–TerminationEnable

(100mA,500mA)

•SynchronousFixed-FrequencyPWM

–ChargeVoltageRegulationAccuracy:

ControllerOperatingat3MHzWith0%to

±0.5%(25°C),±1%(0-125°C)

99.5%DutyCycle

–ChargeCurrentRegulationAccuracy:±5%

•AutomaticHighImpedanceModeforLow

•BoostModeOperationforUSBOTG:

PowerConsumption

–InputVoltageRange(fromBattery):2.3Vto

•RobustProtection

4.5V

–ReverseLeakageProtectionPrevents

–OutputforVBUS:5.05V/500mA

BatteryDrainage

•InputVoltageBasedDynamicPower

–ThermalRegulationandProtection

ManagementProvidesProtectionAgainst

–Input/OutputOverVoltageProtection

CurrentLimitedAdapters

•StatusOutputforChargingandFaults

•BadAdaptorDetectionandRejection

•USBFriendlyBoot-UpSequence

•SafetyLimitRegisterforAddedSecurityby

•2.35×2.65mm30-pinWCSPPackage

LimitingMaximumChargeVoltageand

MaximumChargeCurrent

APPLICATIONS

•20-VAbsoluteMaximumInputVoltageRating

•MobilePhonesandSmartPhones

•9.0-VMaximumOperatingInputVoltage

•MP3Players

•ChargeFasterthanLinearChargers

•HandheldDevices

•Built-inInputCurrentSensingandLimiting

•IntegratedPowerFETsforupto1.5-ACharge

Rate

1

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Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2011,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

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