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BQ24190

更新时间： 2024-09-15 12:21:31
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
8页 267K
描述
I2C Controlled 4.5A Single Cell USB/Adaptor Charger With Narrow VDC Power Path Management and USB OTG

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BQ24190 数据手册

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bq24190  
www.ti.com  
SLUSAW5 –JANUARY 2012  
I2C Controlled 4.5A Single Cell USB/Adaptor Charger  
With Narrow VDC Power Path Management and USB OTG  
Check for Samples: bq24190  
1
FEATURES  
•
Accuracy  
–
–
–
–
±0.5% Charge Voltage Regulation  
±5% Charge Current Regulation  
•
Up to 4.5A Fast Charge Rate and 6A Discharge  
Rate  
•
Single Input USB-compliant Charger  
±5% Input Current Regulation  
±2% Input Voltage Regulation  
–
–
3.9V–17V Input Operating Voltage Range  
Input Current Limit Supports USB2.0 and  
USB 3.0  
•
High Integration  
–
–
–
–
Power Path Management  
–
USB Host/Charging Port Detection  
Compatible to USB Battery Charger Spec  
1.2  
Synchronous Switching MOSFETs  
Integrated Current Sensing  
Internal Loop Compensation  
–
–
Support USB OTG  
•
•
•
•
Accelerate Charge Time by Battery Path  
Impedance Compensation  
Autonomous Charging with or without Host  
•
Narrow System Bus Voltage Power Path  
Management  
Charge Status Outputs for LED or Host  
Processor  
–
Instant-on Works with No Battery or Deeply  
Discharged Battery  
Maximum Power Tracking Capability by Input  
Voltage Regulation  
–
Battery Supplements System When Adapter  
is Fully-Loaded  
4mm x 4mm QFN-24 Package  
•
•
1.5MHz Switching Frequency  
I2C Port for Optimal System Performance and  
Status Reporting  
APPLICATIONS  
•
•
•
Tablet PC  
Portable Media Players  
Portable Internet Devices  
–
Input Current Limit: 100mA, 150mA, 500mA,  
900mA, 1.5A, 2A and 3A  
–
Input Voltage, Charge Voltage, Charge  
Current, Minimum System Voltage, etc.  
DESCRIPTION  
The bq24190 is a highly-integrated switch-mode battery charge management and system power path  
management device for 1 cell Li-Ion and Li-polymer batteries in a wide range of tablet and other portable  
devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging  
time and extends battery life during discharging phase. The I2C serial interface with charging and system settings  
makes the device a truly flexible solution.  
The bq24190 supports a wide range of input sources, including standard USB host port, USB charging port, and  
high power DC adapter. To set the default input current limit, the bq24190 detects the input source following the  
USB battery charging spec 1.2. The bq24190 is compliant with USB 2.0 and USB 3.0 power spec with input  
current and voltage regulation. Meanwhile, the bq24190 supports USB On-the-Go operation by supplying 5V on  
VBUS with current limit up to 1.3A.  
The power path management regulates the system slightly above battery voltage but does not drop below 3.5V  
(programmable). With this feature, the system keeps operating even when the battery is completely depleted or  
removed. When the input source current or voltage limit is reached, the power path management automatically  
reduces the charge current to zero and then starts discharging the battery until the system power requirement is  
met. This supplement mode operation keeps the input source from getting overloaded.  
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.  
PRODUCT PREVIEW information concerns products in the  
Copyright © 2012, Texas Instruments Incorporated  
formative or design phase of development. Characteristic data and  
other specifications are design goals. Texas Instruments reserves  
the right to change or discontinue these products without notice.  
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BQ24190 替代型号

型号 品牌 替代类型 描述 数据表
bq24193 TI

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