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BL8573CB6TR PDF预览

BL8573CB6TR

更新时间: 2024-11-15 01:04:55
品牌 Logo 应用领域
上海贝岭 - BELLING 电池
页数 文件大小 规格书
12页 1255K
描述
500mA/1.5A Standalone Linear Li-Ion Battery Charge

BL8573CB6TR 数据手册

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BL8573  
500mA/1.5A Standalone Linear Li-Ion Battery Charge  
FEATURES  
DESCRIPTION  
The BL8573 is a single cell, fully integrated  
constant current (CC)/constant voltage (CV) Li-ion  
battery charger. Its compact package with  
minimum external components requirement  
makes the BL8573 ideal for portable applications.  
Standalone Capability with no Requirement  
of External MOSFET, Sense Resistor or  
Blocking Diode.  
Complete Linear Charger in Compact Package  
for Single Cell Lithium-Ion Batteries  
Programmable Pre-charge, Fast Charge and  
Termination Current.  
Constant-Current/Constant-Voltage Operation  
with Thermal Regulation to Maximize Charge  
Rate Without Risk of Overheating  
Charges Single Cell Li-Ion Batteries Directly  
from USB Port  
Preset 4.2V/4.35V Charge Voltage with 1%  
Accuracy  
Automatic Recharge  
Charge Status Output Pin  
C/10 Charge Termination  
No external sense resistor or blocking diode is  
necessary for the BL8573. Build-in thermal  
feedback mechanism regulates the charge  
current to control the die temperature during  
high power operation or at elevated ambient  
temperature.  
The BL8573 has a pre-charge function for trickle  
charging deeply discharged batteries. The fast  
charge current can be programmed by an  
external resistor. CV regulation mode is  
automatically enabled once the battery’s  
charging curve reaches the constant voltage  
portion. The output current then decays and is  
finally terminated once the charge current drops  
to 1/10th of the programmed value. The BL8573  
keeps monitoring the battery voltage and enables  
a new charge cycle once the voltage drops by  
150mV below the CV value.  
25A Supply Current in Shutdown  
2.9V Trickle Charge Threshold  
Soft-Start Limits Inrush Current  
Available in SOT-23-6 and ESOP8 Package  
Power supply state is constantly monitored and  
the battery drain current is reduced to minimum  
value automatically when the BL8573 senses a  
lack of input power. In its shutdown mode, the  
BL8573 can reduce the supply current to less than  
25μA. A status pin outputs a logic HIGH/LOW to  
indicate the charging status and the presence of  
power supply.  
APPLICATIONS  
Cellular Telephones, PDAs, MP3 Players  
Charging Docks and Cradles  
Bluetooths Applications  
Other features include charge current monitor,  
under-voltage lockout.  
TYPICAL APPLICATION  
BL8573  
www.belling.com.cn  
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