CN3052A

 

特点： 

 可以用USB口或交流适配器对单节锂电池充电 

 片内功率晶体管 

 不需要外部阻流二极管和电流检测电阻 

 输出电压 4.2V，精度可达 1% 

 在电池电压较低时采用小电流的预充电模式 

 用户可编程的持续充电电流可达 500mA 

 采用恒流/恒压充电模式 

 电源电压掉电时自动进入低功耗的睡眠模式 

 状态指示输出可驱动LED或与单片机接口 

 电池温度监测功能 

 芯片使能输入端 

 封装形式SOP8和MSOP8 

 产品无铅化 

 

应用： 

 移动电话 

 电子词典 

 数码相机 

 MP3 播放器 

 蓝牙应用 

 各种充电器

 

 

Features: 

 Charges Single Cell Li-Ion Batteries Directly 

from USB Port or AC Adaptor 

 On-chip Power MOSFET 

 No external Blocking Diode or Current Sense 

Resistors Required 

 Preset 4.2V Regulation Voltage with 1% 

Accuracy 

 Precharge Conditioning for Reviving Deeply 

Discharged Cells and Minimizing Heat 

Dissipation During Initial Stage of Charge 

 Continuous Programmable Charge Current Up 

to 500mA 

 Constant-Current/Constant-Voltage Operation 

with Thermal Regulation to Maximize Charge 

Rate Without Risk of Overheating 

 Automatic Low-Power Sleep Mode When Input 

Supply Voltage is Removed 

 Status Indication for LEDs or uP Interface 

 C/10 Charge Termination 

 Automatic Recharge 

 Battery Temperature Sensing 

 Chip Enable Input 

 Available in SOP8 Package 

 Pb-free Available

 

 

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