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BQ24707ARGRR

更新时间： 2024-09-18 12:21:31
品牌 Logo 应用领域
德州仪器 - TI 电池比较器电路保护控制器
页数 文件大小 规格书
36页 1269K
描述
1-4 Cell Li Battery SMBus Charge Controller With Independent Comparator and Advanced Circuit Protection

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BQ24707ARGRR 数据手册

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bq24707  
bq24707A  
www.ti.com  
SLUSA78B –JULY 2010–REVISED MARCH 2011  
1-4 Cell Li+ Battery SMBus Charge Controller With Independent Comparator and  
Advanced Circuit Protection  
Check for Samples: bq24707, bq24707A  
1
FEATURES  
DESCRIPTION  
•
SMBus Host-Controlled NMOS-NMOS  
Synchronous Buck Converter with  
Programmable 615kHz, 750kHz, and 885kHz  
Switching Frequency  
The bq24707 and bq24707A are high-efficiency,  
synchronous battery charger, offering low component  
count for space-constraint, multi-chemistry battery  
charging applications.  
•
•
Real Time System Control on ILIM Pin to Limit  
Charge Current  
SMBus controlled input current, charge current, and  
charge voltage DACs allow for very high regulation  
accuracies that can be easily programmed by the  
system power management micro-controller.  
Enhanced Safety Features for Over Voltage  
Protection, Over Current Protection, Battery,  
Inductor, and MOSFET Short Circuit Protection  
The IC uses the internal input current register or  
external ILIM pin to throttle down PWM modulation to  
reduce the charge current.  
•
Programmable Input Current, Charge Voltage,  
Charge Current Limits  
–
–
–
–
±0.5% Charge Voltage Accuracy up to 19.2V  
±3% Charge Current Accuracy up to 8.128A  
±3% Input Current Accuracy up to 8.064A  
The IC provides an IFAULT output to alarm if any  
MOSFET fault or input over current occurs. This  
alarm output allows users to turn off input power  
selectors when the fault occurs. Meanwhile, an  
independent comparator with internal reference is  
available to monitor input current, output current, or  
output voltage.  
±2% 20x Adapter Current or Charge Current  
Output Accuracy  
•
•
Programmable Adapter Detection and  
Indicator  
The IC charges one, two, three, or four series Li+  
cells, and is available in a 20-pin, 3.5×3.5 mm2 QFN  
package.  
Independent Comparator with Internal  
Reference  
•
•
•
•
•
•
•
Integrated Soft Start  
Integrated Loop Compensation  
AC Adapter Operating Range 5V-24V  
15µA Off-State Battery Discharge Current  
20-pin 3.5 x 3.5 mm2 QFN Package  
bq24707: ACOK delay default 1.3s  
bq24707A: ACOK delay default 1.2ms  
20  
19  
18  
17  
16  
1
2
3
4
5
15 LODRV  
14 GND  
13 SRP  
ACN  
ACP  
bq24707  
bq24707A  
CMPOUT  
CMPIN  
ACOK  
12 SRN  
APPLICATIONS  
•
Portable Notebook Computers, UMPC,  
11 IFAULT  
Ultra-Thin Notebook, and Netbook  
•
•
•
•
Personal Digital Assistant  
Handheld Terminal  
Industrial and Medical Equipment  
Portable Equipment  
6
7
8
9
10  
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.  
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.  
© 2010–2011, Texas Instruments Incorporated  
 
 
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BQ24707ARGRR 替代型号

型号 品牌 替代类型 描述 数据表
BQ24707ARGRT TI

完全替代

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