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BQ24381DSGR

更新时间： 2024-11-21 04:34:39
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
18页 787K
描述
Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO Mode

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BQ24381DSGR 数据手册

 浏览型号BQ24381DSGR的Datasheet PDF文件第2页浏览型号BQ24381DSGR的Datasheet PDF文件第3页浏览型号BQ24381DSGR的Datasheet PDF文件第4页浏览型号BQ24381DSGR的Datasheet PDF文件第5页浏览型号BQ24381DSGR的Datasheet PDF文件第6页浏览型号BQ24381DSGR的Datasheet PDF文件第7页 
bq24380  
bq24381  
www.ti.com .............................................................................................................................................................. SLUS805A–APRIL 2008–REVISED MAY 2008  
Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With  
LDO Mode  
1
FEATURES  
DESCRIPTION  
2
•
Input Overvoltage Protection  
Accurate Battery Overvoltage Protection  
Output Short-Circuit Protection  
Soft-Start to Prevent Inrush Currents  
Soft-Stop to Prevent Voltage Spikes  
30-V Maximum Input Voltage  
Supports up to 1.7-A Load Current  
Thermal Shutdown  
The bq2438x family are charger front-end integrated  
circuits designed to provide protection to Li-ion  
batteries from failures of the charging circuitry. The IC  
continuously monitors the input voltage and the  
battery voltage. The device operates like a linear  
regulator, maintaining a 5.5-V (bq24380) or 5-V  
(bq24381) output with input voltages up to the Input  
overvoltage threshold. During input overvoltage  
conditions, the IC immediately turns off the internal  
pass FET disconnecting the charging circuitry from  
the damaging input source. Additionally, if the battery  
voltage rises to unsafe levels while charging, power is  
removed from the system. The IC checks for  
short-circuit or overload conditions at its output when  
turning the pass FET on, and if it finds unsafe  
conditions, it switches off, and then rechecks the  
conditions. Additionally, the IC also monitors its die  
temperature and switches off if it exceeds 140°C.  
•
•
•
•
•
•
•
•
•
•
Enable Function  
Fault Status Indication  
Small 2 mm × 2 mm 8-Pin SON Package  
APPLICATIONS  
•
•
•
•
Smart Phones, Mobile Phones  
PDAs  
MP3 Players  
Low-Power Handheld Devices  
When the IC is controlled by a processor, the IC  
provides status information about fault conditions to  
the host.  
APPLICATION SCHEMATIC  
AC Adapter  
OUT  
8
6
VDC  
GND  
1
IN  
Charging  
Circuit  
1 mF  
1 mF  
bq24380  
VBAT  
SYSTEM  
VSS  
2
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
PowerPAD is a trademark of Texas Instruments.  
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...18

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BQ24381DSGR 替代型号

型号 品牌 替代类型 描述 数据表
BQ24381DSGRG4 TI

完全替代

 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO
BQ24381DSGT TI

完全替代

 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO
BQ24381DSGTG4 TI

类似代替

 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC With LDO

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