500mA/1.5A Lithium Ion Battery Linear Charger CXLB7312 ,锂电池充电芯片,single cell, fully integrated constant current constant voltage Li-ion battery charger

目录20x嘉泰姆

1.产品概述       2.产品特点     3.应用范围      4.技术规格书下载（产品PDF文档） 
5.产品封装图</span>   6.电路原理图</span>  7.功能概述      8.相关产品20x嘉泰姆

一,产品概述(General Description)      20x嘉泰姆

  The CXLB7312 is a single cell, fully integrated constant current (CC)/constant20x嘉泰姆

voltage (CV) Li-ion battery charger. Its compact package with minimum external  20x嘉泰姆

components requirement makes the CXLB7312 ideal for portable applications.20x嘉泰姆

No external sense resistor or blocking diode is necessary for the CXLB7312.20x嘉泰姆

Build-in thermal feedback mechanism regulates the charge current to control20x嘉泰姆

the die temperature during high power operation or at elevated ambient20x嘉泰姆

temperature.20x嘉泰姆

  The CXLB7312 has a pre-charge function for trickle charging deeply discharged20x嘉泰姆

batteries. The fast charge current can be programmed by an external resistor.20x嘉泰姆

CV regulation mode is automatically enabled once the battery’s charging curve20x嘉泰姆

reaches the constant voltage portion. The output current then decays and is20x嘉泰姆

finally terminated once the charge current drops to 1/10th of the programmed value.20x嘉泰姆

The CXLB7312 keeps monitoring the battery voltage and enables a new charge cycle 20x嘉泰姆

once the voltage drops by 150mV below the CV value.Power supply state is constantly 20x嘉泰姆

monitored and the battery drain current is reduced to minimum value automatically 20x嘉泰姆

when the CXLB7312 senses a lack of input power. In its shutdown mode, the CXLB731220x嘉泰姆

can reduce the supply current to less than 25μA. A status pin outputs a logic HIGH/LOW 20x嘉泰姆

to indicate the charging status and the presence of power supply.20x嘉泰姆

 Other features include charge current monitor,under-voltage lockout.20x嘉泰姆

二</span>.产品特点(Features)
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·Standalone Capability with no Requirement 20x嘉泰姆

of External MOSFET, Sense Resistor orBlocking Diode.20x嘉泰姆

·Complete Linear Charger in Compact Package20x嘉泰姆

for Single Cell Lithium-Ion Batteries20x嘉泰姆

·Programmable Pre-charge, Fast Charge and Termination Current.20x嘉泰姆

·Constant-Current/Constant-Voltage Operation20x嘉泰姆

with Thermal Regulation to Maximize Charge20x嘉泰姆

Rate Without Risk of Overheating20x嘉泰姆

·Charges Single Cell Li-Ion Batteries Directly from USB Port20x嘉泰姆

·Preset 4.2V Charge Voltage with ±1% Accuracy20x嘉泰姆

·Automatic Recharge20x嘉泰姆

·Charge Status Output Pin20x嘉泰姆

·C/10 Charge Termination20x嘉泰姆

·25μA Supply Current in Shutdown20x嘉泰姆

·2.9V Trickle Charge Threshold20x嘉泰姆

·Soft-Start Limits Inrush Current20x嘉泰姆

·Available in SOT-23-6 and ESOP8 Package20x嘉泰姆

三</span>,应用范围 (Applications)
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Cellular Telephones, PDAs, MP3 Players20x嘉泰姆

Charging Docks and Cradles20x嘉泰姆

Bluetooths Applications
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四.技术规格书下载（产品PDF）</span>20x嘉泰姆

需要详细的PDF规格书请扫一扫微信联系我们</span>20x嘉泰姆

                        20x嘉泰姆

五</span>,产品封装图 (Package)
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六</span>.电路原理图</span>20x嘉泰姆

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七,相关芯片选择指南
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