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BQ25306

BQ25306产品图片
  • 发布时间:2021/3/1 12:49:00
  • 所属类别:集成电路 » 集成电路
  • 公    司:深圳市维基鸿电子有限公司
  • 联 系 人:程小姐,黄小姐
  • BQ25306供应商

BQ25306属性

  • 面议
  • Standalone 17-V, 3A 1-2 cell buck battery charger
  • Standalone charger and easy to configure
  • 面议
  • TI

BQ25306描述

TheBQ25306isahighly-integratedstandaloneswitch-modebatterychargerfor1-celland2-cellLi-ion,Li-polymer,andLiFePO4batteries.TheBQ25306supports4.1-Vto17-Vinputvoltageand3-Afastchargecurrent.TheintegratedcurrentsensingtopologyofthedeviceenableshighchargeefficiencyandlowBOMcost.Thebest-in-class200-nAlowquiescentcurrentofthedeviceconservesbatteryenergyandmaximizestheshelftimeforportabledevices.TheBQ25306isavailableina3x3WQFNpackageforeasy2-layerlayoutandspacelimitedapplications.

TheBQ25306supportsa4.1-Vto17-Vinputtochargeeithersinglecellbatteriesordualbatteriesinserieswithchargevoltagefrom3.4Vto9.0Vprogrammablebyresistordivider.TheBQ25306providesupto3-Acontinuouschargecurrenttoasinglecell(1S)batteryordualcellbatteriesinseries(2S).Thedevicefeaturesfastchargingforportabledevices.Itsinputvoltageregulationdeliversmaximumchargingpowertothebatteryfrominputsource.Thesolutionishighlyintegratedwithaninputreverse-blockingFET(RBFET,Q1),high-sideswitchingFET(HSFET,Q2),andlow-sideswitchingFET(LSFET,Q3).

TheBQ25306featureslosslessintegratedcurrentsensingtoreducepowerlossandBOMcostwithminimizedcomponentcount.Italsointegratesabootstrapdiodeforthehigh-sidegatedriveandbatterytemperaturemonitortosimplifysystemdesign.Thedeviceinitiatesandcompletesachargingcyclewithouthostcontrol.TheBQ25306chargevoltageandchargecurrentaresetbyexternalresistors.TheBQ25306chargevoltageisprogrammedbyanexternalresisterdivideranditchargesthebatteryinthreephases:pre-conditioning,constantcurrent,andconstantvoltage.Attheendofthechargingcycle,thechargerautomaticallyterminatesifthechargecurrentisbelowtheterminationcurrentthresholdandthebatteryvoltageisabovetherechargethreshold.Whenthebatteryvoltagefallsbelowtherechargethreshold,thechargerwillautomaticallystartanotherchargingcycle.Thechargerprovidesvarioussafetyfeaturesforbatterychargingandsystemoperations,includingbatterytemperaturemonitoringbasedonnegativetemperaturecoefficient(NTC)thermistor,chargesafetytimer,inputover-voltageandover-currentprotections,aswellasbatteryover-voltageprotection.PinopenandshortprotectionisalsobuiltintoprotectagainstthebatteryvoltagefeedbackpinFBorfeedbackresistorsaccidentlyopenorshort.Thethermalregulationregulateschargecurrenttolimitdietemperatureduringhighpoweroperationorhighambienttemperatureconditions.

TheSTATpinoutputreportschargingstatusandfaultconditions.Whentheinputvoltageisremoved,thedeviceautomaticallyentersHiZmodewithverylowleakagecurrentfrombatterytothechargerdevice.TheBQ25306isavailableina3mmx3mmthinWQFNpackage.


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联系方式
  • 联系人:程小姐,黄小姐
  • 地 址:广东省深圳市福田区华强北赛格科技园4栋西6F
  • 邮 编:518000
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  • 传 真:086-0755-82563613
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