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LTC4011 Datasheet(PDF) 1 Page - Linear Technology

Part # LTC4011
Description  High Efficiency Standalone Nickel Battery Charger
Download  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4011 Datasheet(HTML) 1 Page - Linear Technology

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LTC4011

4011fb
Typical applicaTion
FeaTures
DescripTion
High Efficiency Standalone
Nickel Battery Charger
applicaTions
n
CompleteNiMH/NiCdChargerfor1to16Cells
n
NoMicrocontrollerorFirmwareRequired
n
550kHzSynchronousPWMCurrentSourceController
n
NoAudibleNoisewithCeramicCapacitors
n
PowerPath™ControlSupport
n
ProgrammableChargeCurrent:5%Accuracy
n
WideInputVoltageRange:4.5Vto34V
n
AutomaticTricklePrecharge
n
–∆VFastChargeTermination
n
Optional∆T/∆tFastChargeTermination
n
AutomaticNiMHTop-OffCharge
n
ProgrammableTimer
n
AutomaticRecharge
n
MultipleStatusOutputs
n
MicropowerShutdown
n
20-LeadThermallyEnhancedTSSOPPackage
n
IntegratedorStandaloneBatteryCharger
n
PortableInstrumentsorConsumerProducts
n
Battery-PoweredDiagnosticsandControl
n
Back-UpBatteryManagement
L
,LT,LTC,LTM,LinearTechnologyandtheLinearlogoareregisteredtrademarksofLinear
TechnologyCorporation.PowerPathisatrademarkofLinearTechnologyCorporation.Allother
trademarksarethepropertyoftheirrespectiveowners.
TheLTC®4011providesacomplete,cost-effectivenickel
batteryfastchargesolutioninasmallpackageusingfew
external components. A 550kHz PWM current source
controllerandallnecessarychargeinitiation,monitoring
andterminationcontrolcircuitryareincluded.
The LTC4011 automatically senses the presence of a
DC adapter and battery insertion or removal. Heavily
discharged batteries are precharged with a trickle cur-
rent.TheLTC4011cansimultaneouslyuseboth–∆Vand
∆T/∆tfastchargeterminationtechniquesandcandetect
variousbatteryfaults.Ifnecessary,atop-offchargeis
automaticallyappliedtoNiMHbatteriesafterfastcharg-
ingiscompleted.TheICwillalsoresumechargingifthe
batteryself-dischargesafterafullchargecycle.
AllLTC4011chargingoperationsarequalifiedbyactual
chargetimeandmaximumaveragecellvoltage.Charging
mayalsobegatedbyminimumandmaximumtemperature
limits.NiMHorNiCdfastchargeterminationparameters
arepin-selectable.
IntegratedPowerPathcontrolsupportensuresthatthe
systemremainspoweredatalltimeswithoutallowingload
transientstoadverselyaffectchargetermination.
2ANiMHBatteryCharger
2ANiMHChargeCycleat1C
0.1µF
10µF
4.7µH
10µF
0.033µF
0.068µF
FAULT
INFET
CHRG
FROM
ADAPTER
5V
TOC
READY


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