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bq24195L

更新时间： 2024-09-16 12:51:27
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德州仪器 - TI /
页数 文件大小 规格书
41页 2281K
描述
I2C Controlled 2.5A / 4.5A Single Cell USB/Adapter Charger With 5.1V at 1A / 5.1V at 2.1A Synchronous Boost Operation

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bq24195L 数据手册

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bq24195  
bq24195L  
www.ti.com  
SLUSB97 –OCTOBER 2012  
I2C Controlled 2.5A / 4.5A Single Cell USB/Adapter Charger  
With 5.1V at 1A / 5.1V at 2.1A Synchronous Boost Operation  
Check for Samples: bq24195, bq24195L  
1
FEATURES  
•
High Accuracy (0°C to 125°C)  
–
–
–
–
±0.5% Charge Voltage Regulation  
±7% Charge Current Regulation  
±7.5% Input Current Regulation  
±2% Output Regulation in Boost Mode  
2
•
High Efficiency Switch Mode Charger  
–
2.5A(bq24195L) or 4.5A(bq24195) Fast  
Charging  
–
92% Charge Efficiency at 2A, 90% at 4A  
•
Synchronous Boost Converter in Battery  
Boost Mode  
•
High Integration  
–
–
–
–
–
Power Path Management  
Synchronous Switching MOSFETs  
Integrated Current Sensing  
Bootstrap Diode  
–
5.1V at 1A (bq24195L) or 5.1V at 2.1A  
(bq24195)  
–
94% 5.1V Boost Efficiency at 1A, 91% at  
2.1A  
Internal Loop Compensation  
•
•
Highest Battery Discharge Efficiency with  
12mΩ Battery Discharge MOSFET up to 9A  
Discharge Current  
•
Safety  
–
Battery Temperature Sensing and Charging  
Safety Timer  
Single Input USB-compliant/Adapter Charger  
–
–
–
Thermal Regulation and Thermal Shutdown  
Input System Over-Voltage Protection  
MOSFET Over-Current Protection  
–
USB Host or Charging Port D+/D- Detection  
Compatible to USB Battery Charger Spec  
1.2  
–
–
Input Voltage and Current Limit Supports  
USB2.0 and USB 3.0  
•
•
•
Charge Status Outputs for LED or Host  
Processor  
Input Current Limit: 100mA, 150mA, 500mA,  
900mA, 1.2A, 1.5A, 2A and 3A  
Low Battery Leakage Current and Support  
Shipping Mode  
•
•
3.9V–17V Input Operating Voltage Range  
4mm x 4mm QFN-24 Package  
–
Support All Kinds of Adapter with Input  
Voltage DPM Regulation  
APPLICATIONS  
Narrow VDC (NVDC) Power Path Management  
•
•
•
•
•
•
Power Bank for Smartphone, Tablet  
Tablet PC  
–
Instant-on Works with No Battery or Deeply  
Discharged Battery  
Smart Phone  
–
Ideal Diode Operation in Battery  
Supplement Mode  
Portable Audio Speaker  
Portable Media Players  
Internet Devices  
•
•
1.5MHz Switching Frequency for Low Profile  
Inductor  
Autonomous Battery Charging with or without  
Host Management  
–
–
–
Battery Charge Enable  
Battery Charge Preconditioning  
Charge Termination and Recharge  
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 © 2012, Texas Instruments Incorporated  
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