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BQ24140 PDF预览

BQ24140

更新时间： 2024-11-15 12:21:31
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德州仪器 - TI 电池开关
页数 文件大小 规格书
39页 1666K
描述
Fully Integrated Dual-Input Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support

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BQ24140 数据手册

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bq24140  
www.ti.com  
SLUSAO5 –OCTOBER 2011  
Fully Integrated Dual-Input Switch-Mode One-Cell Li-Ion Charger with Full USB  
Compliance and USB-OTG Support  
Check for Samples: bq24140  
1
FEATURES  
•
Programmable Charge Parameters Through  
I2C Interface (up to 3.4 Mbps):  
•
High-Efficiency Mini-USB/AC Battery Charger  
for Single-Cell Li-Ion and Li-Polymer Battery  
Packs  
–
–
–
–
–
–
Input Current  
Fast-Charge/Termination Current  
Charge Voltage (3.5-4.44V)  
Safety Timer with Reset Control  
Safety Timer with Reset Control  
Termination Enable  
•
•
Charge Battery and Provide USB-OTG Support  
at the Same Time  
High-Accuracy Voltage and Current Regulation  
–
–
–
Input Current Regulation Accuracy: ±5%  
(100mA, 500mA)  
•
Synchronous Fixed-Frequency PWM  
Controller Operating at 3 MHz With 0% to  
99.5% Duty Cycle  
Charge Voltage Regulation Accuracy:  
±0.5% (25°C), ±1% (0-125°C)  
Charge Current Regulation Accuracy: ±5%  
•
•
Automatic High Impedance Mode for Low  
Power Consumption  
•
•
Boost Mode Operation for USB OTG:  
–
Input Voltage Range (from Battery): 2.3V to  
4.5V  
Robust Protection  
–
Reverse Leakage Protection Prevents  
Battery Drainage  
–
Output for VBUS: 5.05V/500 mA  
Input Voltage Based Dynamic Power  
Management Provides Protection Against  
Current Limited Adapters  
–
–
Thermal Regulation and Protection  
Input/Output Over Voltage Protection  
•
•
•
Status Output for Charging and Faults  
USB Friendly Boot-Up Sequence  
•
•
Bad Adaptor Detection and Rejection  
Safety Limit Register for Added Security by  
Limiting Maximum Charge Voltage and  
Maximum Charge Current  
2.35 × 2.65 mm 30-pin WCSP Package  
APPLICATIONS  
•
•
•
•
•
20-V Absolute Maximum Input Voltage Rating  
9.0-V Maximum Operating Input Voltage  
Charge Faster than Linear Chargers  
•
•
•
Mobile Phones and Smart Phones  
MP3 Players  
Handheld Devices  
Built-in Input Current Sensing and Limiting  
Integrated Power FETs for up to 1.5-A Charge  
Rate  
4.7 mF  
4.7 mF  
PMID1  
PMID2  
1 mH  
68 mW  
AC Adapter or  
SW1  
VIN  
10 µF  
47 µF  
Wireless Power  
100 nF  
1 mF  
PACK+  
PACK-  
BOOT1  
SW2  
+
1 mH  
VBUS  
USB Adapter  
4.7 mF  
100 nF  
BOOT2  
10 kW  
10 kW  
10 kW  
10 kW  
CSIN  
VBAT  
SCL  
SDA  
STAT  
OTG  
SLRST  
DIS  
10 kW  
10 kW  
VREF  
GND  
1 mF  
VREG  
LED  
HOST  
0.1 mF  
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.  
Copyright © 2011, Texas Instruments Incorporated  
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