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BQ24314A PDF预览

BQ24314A

更新时间： 2024-11-18 04:34:39
品牌 Logo 应用领域
德州仪器 - TI 过电流保护
页数 文件大小 规格书
21页 857K
描述
OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

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BQ24314A 数据手册

 浏览型号BQ24314A的Datasheet PDF文件第2页浏览型号BQ24314A的Datasheet PDF文件第3页浏览型号BQ24314A的Datasheet PDF文件第4页浏览型号BQ24314A的Datasheet PDF文件第5页浏览型号BQ24314A的Datasheet PDF文件第6页浏览型号BQ24314A的Datasheet PDF文件第7页 
bq24314A  
www.ti.com  
SLUS811–MARCH 2008  
OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND  
Li+ CHARGER FRONT-END PROTECTION IC  
1
FEATURES  
•
Available in Space-Saving Small 8 Lead 2×2  
SON  
23  
•
Provides Protection for Three Variables:  
–
–
–
Input Overvoltage, with Rapid Response in  
< 1 µs  
APPLICATIONS  
•
•
•
•
•
Mobile Phones and Smart Phones  
PDAs  
MP3 Players  
Low-Power Handheld Devices  
Bluetooth™ Headsets  
User-Programmable Overcurrent with  
Current Limiting  
Battery Overvoltage  
•
•
•
30V Maximum Input Voltage  
Supports up to 1.5A Input Current  
Robust Against False Triggering Due to  
Current Transients  
•
•
•
Thermal Shutdown  
Enable Input  
Status Indication – Fault Condition  
DESCRIPTION  
The bq24314A is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the  
charging circuit. The IC continuously monitors the input voltage, the input current, and the battery voltage. In  
case of an input overvoltage condition, the IC immediately removes power from the charging circuit by turning off  
an internal switch. In the case of an overcurrent condition, it limits the system current at the threshold value, and  
if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also  
monitors its own die temperature and switches off if it exceeds 140°C. The input overcurrent threshold is  
user-programmable.  
The IC can be controlled by a processor and also provides status information about fault conditions to the host.  
APPLICATION SCHEMATIC  
AC Adapter  
VDC  
GND  
1 IN  
OUT  
8
1 mF  
1 mF  
bq24080  
Charger IC  
bq24314A  
SYSTEM  
VBAT  
6
FAULT  
CE  
4
5
2
7
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
PowerPAD is a trademark of Texas Instruments.  
Bluetooth is a trademark of Bluetooth SIG, Inc.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
1234567...21

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BQ24314A 替代型号

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