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BQ24715

更新时间： 2024-09-18 12:25:11
品牌 Logo 应用领域
德州仪器 - TI 电池控制器
页数 文件大小 规格书
8页 760K
描述
2-3 Cell NVDC-1 Battery Charger Controller with Ultra-Fast Transient Response and High Light-Load Efficiency

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BQ24715 数据手册

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bq24715  
www.ti.com  
SLUSBD1 –FEBRUARY 2013  
2-3 Cell NVDC-1 Battery Charger Controller  
with Ultra-Fast Transient Response and High Light-Load Efficiency  
Check for Samples: bq24715  
1
FEATURES  
APPLICATIONS  
•
6-24V Input SMBus NVDC-1 2-3S Battery  
Charger Controller  
•
•
•
Ultrabook, Notebook, and Tablet PC  
Industrial and Medical Equipment  
Portable Equipment  
•
System Instant-on Operation with No Battery  
or Deeply Discharged Battery  
•
•
Ultra-Fast Transient Response of 100 µs  
DESCRIPTION  
The bq24715 is a NVDC-1 synchronous battery  
charge controller with low quiescent current, high light  
load efficiency for 2S or 3S Li-ion battery charging  
applications, offering low component count.  
Ultra-Low Quiescent Current of 500 µA and  
High PFM Light Load Efficiency 80% at 20mA  
load to Meet Energy Star and ErP Lot6  
•
•
Switching Frequency: 600kHz/800kHz/1MHz  
The power path management allows the system to be  
regulated at battery voltage but does not drop below  
the programmable system minimum voltage.  
Programmable System/Charge Voltage (16  
mV/step), Input/Charge Current (64 mA/step)  
with High Accuracy  
The bq24715 provides N-channel ACFET and RBFET  
drivers for the power path management. It also  
provides driver of the external P-channel battery FET.  
The loop compensation is fully integrated.  
–
–
–
±0.5% Charge Voltage Regulation  
±3% Input/Charge Current Regulation  
±2% 40x Input/16x Discharge Current  
Monitor Output  
The bq24715 has programmable 11-bit charge  
voltage, 7-bit input/charge current and 6-bit minimal  
system voltage with very high regulation accuracies  
through the SMBus communication interface.  
•
•
Support Battery LEARN Function  
Maximize CPU Performance with Deeply  
Discharged Battery or No Battery  
•
•
Integrated NMOS ACFET and RBFET Driver  
20-pin 3.5 x 3.5 mm2 QFN Package  
The bq24715 monitors adapter current or battery  
discharge current through the IOUT pin allowing the  
host to throttle down CPU speed when needed.  
The bq24715 provides extensive safety features for  
over current, over voltage and MOSFET short circuit.  
Simplified Application Diagram  
Ultra-Low Quiescent  
Current  
Ultra-Fast  
DPM  
Support CPU Turbo Mode  
To System  
Adaptor  
6-24V  
Iin  
Enhanced Safety  
Features  
OCP, OVP,  
FET Short  
Optional  
N-FET  
Driver  
bq24715  
Adaptor Detection  
Ichg  
PMOS BAT  
FET Driver  
NVDC-1  
Charger  
Controller  
SMBus Controls V and I  
with High Accuracy  
SMBus  
2S-3S  
HOST  
Iin, Idischarge  
Integrated Compensation Internal Soft Start  
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  
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.  
Copyright © 2013, Texas Instruments Incorporated  
12345678

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