BQ24074RGTR Battery 4.2V 1.5A Power Path Management IC

BQ24074RGTR Battery Management Li-Ion Batt Chrgr & Pwr-Path Mgmt IC

1.Features

FullycompliantUSBcharger– Selectable100-mAand 500-mAmaximuminputcurrent– 100-mAMaximumcurrentlimit ensurescomplianceto USB-IFstandard– Input-baseddynamicpowermanagement(VIN-DPM)for protectionagainstpoorUSBsources
• 28-VInputRatingwith OvervoltageProtection
•Integrateddynamicpowerpathmanagement(DPPM)functionsimultaneouslyandindependentlypowersthe systemand chargesthebattery
• Supportsup to 1.5-Achargecurrentwithcurrentmonitoringoutput(ISET)
• Programmableinputcurrentlimit up to 1.5 A forwall adapters
• Systemoutputtracksbatteryvoltage(bq24072)
• Programmableterminationcurrent(bq24074)
• Batterydisconnectfunctionwith SYSOFFinput(bq24075,bq24079)
• ProgrammablePre-chargeand Fast-chargesafetytimers
• Reversecurrent,short-circuitand thermalprotectionNTCthermistorinput
• Proprietarystart-upsequencelimitsinrushcurrent
• Statusindication– Charging/done,powergood

2.Applications

martphones
• Portablemediaplayers
• Portablenavigationdevices
• Low-powerhandhelddevices

3.Description

The BQ2407xseriesof devicesare integratedLi-Ionlinearchargersand systempowerpathmanagementdevicestargetedatspace-limitedportableapplications.The devicesoperatefromeithera USBport or an AC adapterand supportchargecurrentsupto 1.5A. Theinputvoltagerangewithinputovervoltageprotectionsupportsunregulatedadapters.The USBinputcurrentlimitaccuracyandstartup sequenceallowthe BQ2407xto meetUSB-IFinrushcurrentspecifications.Additionally,the inputdynamicpowermanagement(VIN-DPM)preventsthechargerfromcrashingincorrectlyconfiguredUSBsources

The BQ2407xfeaturesdynamicpowerpathmanagement(DPPM)that powersthe systemwhilesimultaneouslyandindependentlychargingthebattery.The DPPMcircuitreducesthe chargecurrentwhenthe inputcurrentlimit causesthe systemoutputto fall to the DPPMthreshold;thus,supplyingthesystemloadat all timeswhilemonitoringthe chargecurrentseparately.Thisfeaturereducesthe numberof chargeand dischargecycleson the battery,allowsfor properchargeterminationand enablesthe systemto run with a defectiveor absentbatterypack

4.TypicalApplicationCircuit

5.

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Shenzhen Hongxinwei Technology Co., Ltd is located in the Bao’an District of Shenzhen.It is a high-tech enterprise setting research and development, production, sales into an integration. The company covers an area of 15 acres, having modern producing workshop and professional production and testing equipments. The company has an existing staff of more than 100 people.The company has set up offices in Shenzhen, Hongkong and Singapore providing worldwide service.