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Gestão Li-Ion Batt Chrgr da bateria de BQ24074RGTR & Pwr-trajeto Mgmt IC
1.Features
Entrada-baseddynamicpowermanagement de USB-IFstandard do ensurescomplianceto de FullycompliantUSBcharger- Selectable100-mAand 500-mAmaximuminputcurrent- 100-mAMaximumcurrentlimit (VIN-DPM) para protectionagainstpoorUSBsources
• 28-VInputRatingwith OvervoltageProtection
•Chargesthebattery do systemand do functionsimultaneouslyandindependentlypowersthe de Integrateddynamicpowerpathmanagement (DPPM)
• Supportsup a 1.5-Achargecurrentwithcurrentmonitoringoutput (ISET)
• Programmableinputcurrentlimit até 1,5 adaptadores do forwall de A
• Systemoutputtracksbatteryvoltage (bq24072)
• Programmableterminationcurrent (bq24074)
• Batterydisconnectfunctionwith SYSOFFinput (bq24075, bq24079)
• ProgrammablePre-chargeand rápido-chargesafetytimers
• Reversecurrent, thermalprotectionNTCthermistorinput curto-circuitand
• Proprietarystart-upsequencelimitsinrushcurrent
• Carregamento de Statusindication-/feito, powergood
2.Applications
martphones
• Portablemediaplayers
• Portablenavigationdevices
• Baixo-powerhandhelddevices
3.Description
Os systempowerpathmanagementdevicestargetedatspace-limitedportableapplications do integratedLi-Ionlinearchargersand do devicesare de BQ2407xseriesof. O devicesoperatefromeithera USBport ou um supportchargecurrentsupto 1.5A do adapterand da C.A. Sequenceallowthe BQ2407xto meetUSB-IFinrushcurrentspecifications.Additionally de Theinputvoltagerangewithinputovervoltageprotectionsupportsunregulatedadapters.The USBinputcurrentlimitaccuracyandstartup, os preventsthechargerfromcrashingincorrectlyconfiguredUSBsources do inputdynamicpowermanagement (VIN-DPM)
O BQ2407xfeaturesdynamicpowerpathmanagement (DPPM) esse systemwhilesimultaneouslyandindependentlychargingthebattery do powersthe. A queda do systemoutputto do causesthe do inputcurrentlimit do chargecurrentwhenthe de DPPMcircuitreducesthe ao DPPMthreshold; assim, supplyingthesystemloadat todo timeswhilemonitoringthe chargecurrentseparately. Número de Thisfeaturereducesthe de dischargecycleson do chargeand a bateria, systemto do enablesthe do properchargeterminationand do allowsfor corrido com um absentbatterypack do defectiveor
4.TypicalApplicationCircuit
5.
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