CXLB7265-4.2

CXLB7265是一款恒流、恒压锂离子电池充电器控制器,采用电流模式PWM降压(buck)开关结构。CXLB7265具有500kHz的开关频率,为一节(4.2V)或两节(8.4V)锂离子电池提供了一种小型、简单、高效的快速充电解决方案。CXLB7265对蓄电池进行三相充电:调节、恒流和恒压。外部感测电阻器以±10%的精度设置充电电流。内部电阻分压器和精密基准将每个电池的最终浮充电压设置为4.2V,精度为±1%。内部比较器检测接近充电结束的情况,而内部定时器设置总充电时间并终止充电周期。如果电池电压低于内部阈值(每个电池4.05V),CXLB7265会自动重新开始充电。当断开直流电源时,CXLB7265也会自动进入休眠模式。CXLB7265在8铅标准操作程序包中提供

CXLB7265恒流恒压开关型锂离子电池充电器控制器电流模式PWM降压buck开关结构500kHz的开关频率一节4.2V两节8.4V锂离子电池低功耗自动睡眠模式

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   产品概述 返回TOPl4h嘉泰姆


The CXLB7265 is a constant current, constant voltage Li-Ion battery charger controller that uses a current mode PWM step-down (buck) switching architecture. With a 500kHz switching frequency, the CXLB7265 provides a small, simple and efficient solution to fast charge one (4.2V) or two (8.4V) cell lithium-ion batteries. The CXLB7265 charges the battery in three phases: conditioning, constant current, and constant voltage. An external sense resistor sets the charge current with ±10% accuracy. An internal resistor divider and precision reference set the final float voltage to 4.2V per cell with ± 1% accuracy. An internal comparator detects the near end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle. The CXLB7265 automatically re-starts the charge if the battery voltage falls below an internal threshold, 4.05V per cell. The CXLB7265also automatically enters sleep mode when DC supplies are removed. The CXLB7265is available in the 8-lead SOP package

   产品特点 返回TOPl4h嘉泰姆


 Wide Input Supply Voltage Range: l4h嘉泰姆

4.8V to 20V – 4.2 Version l4h嘉泰姆

8.9V to 20V – 8.4 Version l4h嘉泰姆

8.9V to 20V – 8.34 Version  l4h嘉泰姆

500kHz Switching Frequencyl4h嘉泰姆

End-of-Charge Current Detection Outputl4h嘉泰姆

12 Hour Charge Termination Timerl4h嘉泰姆

±1% Charge Voltage Accuracyl4h嘉泰姆

 ±10% Charge Current Accuracyl4h嘉泰姆

 Low 10μA Reverse Battery Drain Currentl4h嘉泰姆

 Automatic Battery Rechargel4h嘉泰姆

 Automatic Trickle Charging of Low Voltage Batteriesl4h嘉泰姆

 Automatic Sleep Mode for Low Power Consumptionl4h嘉泰姆

 Battery Temperature Sensingl4h嘉泰姆

 Stable with Ceramic Output Capacitorl4h嘉泰姆

 Support up to 3A Charge Currentl4h嘉泰姆

 8-Lead SOP Packagel4h嘉泰姆

 RoHS Compliant and 100% Lead (Pb)-Free Halogen-Freel4h嘉泰姆

   应用范围 返回TOPl4h嘉泰姆


  Small Notebook Computerl4h嘉泰姆

  Portable DVDl4h嘉泰姆

  Handheld Instrumentsl4h嘉泰姆

   技术规格书(产品PDF) 返回TOP l4h嘉泰姆


     需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持l4h嘉泰姆

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4.19Vl4h嘉泰姆

4.5-6.5Vl4h嘉泰姆

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4.19Vl4h嘉泰姆

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◀ 上一篇:开关型单节两节锂离子锂聚合物电池充电管理芯片CXLB7264A携式设备的充电管理应用高精度电压电流调节器预充充电状态指示充电截止等功能

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