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BQ24315

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
20页 1468K
描述
OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND Li+ CHARGER FRONT-END PROTECTION IC

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BQ24315 数据手册

 浏览型号BQ24315的Datasheet PDF文件第2页浏览型号BQ24315的Datasheet PDF文件第3页浏览型号BQ24315的Datasheet PDF文件第4页浏览型号BQ24315的Datasheet PDF文件第5页浏览型号BQ24315的Datasheet PDF文件第6页浏览型号BQ24315的Datasheet PDF文件第7页 
bq24315  
www.ti.com  
SLUS817–MARCH 2008  
OVERVOLTAGE AND OVERCURRENT PROTECTION IC AND  
Li+ CHARGER FRONT-END PROTECTION IC  
1
FEATURES  
•
•
5.5V LDO Mode Voltage Regulation  
23  
•
Provides Protection for Three Variables:  
Available in Space-Saving Small 8 Lead 2×2  
SON  
–
–
–
Input Overvoltage, with Rapid Response in  
< 1 µs  
APPLICATIONS  
User-Programmable Overcurrent with  
Current Limiting  
•
•
•
•
•
Mobile Phones and Smart Phones  
PDAs  
MP3 Players  
Low-Power Handheld Devices  
Bluetooth™ Headsets  
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 bq24315 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. The  
output of the bq24315 acts a linear regulator. The output is regulated to 5.5V for inputs between 5.5V and the  
overvoltage threshold. If an input overvoltage condition occurs, 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  
bq24315  
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...20

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BQ24315 替代型号

型号 品牌 替代类型 描述 数据表
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