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BQ24123

更新时间： 2024-10-02 04:34:39
品牌 Logo 应用领域
德州仪器 - TI 开关
页数 文件大小 规格书
36页 1109K
描述
SINGLE-CHIP SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT IC WITH ENHANCED EMI PERFORMANCE(bqSWITCHER⑩)

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BQ24123 数据手册

 浏览型号BQ24123的Datasheet PDF文件第2页浏览型号BQ24123的Datasheet PDF文件第3页浏览型号BQ24123的Datasheet PDF文件第4页浏览型号BQ24123的Datasheet PDF文件第5页浏览型号BQ24123的Datasheet PDF文件第6页浏览型号BQ24123的Datasheet PDF文件第7页 
bq24120  
bq24123  
Actual Size  
3,5 mm x 4,5 mm  
bq24125  
www.ti.com  
SLUS688E–MARCH 2006–REVISED DECEMBER 2007  
SINGLE-CHIP SWITCHMODE, LI-ION AND LI-POLYMER CHARGE-MANAGEMENT  
IC WITH ENHANCED EMI PERFORMANCE(bqSWITCHER™)  
1
FEATURES  
DESCRIPTION  
2
•
Enhanced EMI Performance  
•
•
•
Integrated Power FETs For Up To 2-A Charge  
Rate  
The bqSWITCHER™ series are highly integrated  
Li-ion  
and  
Li-polymer  
switch-mode  
charge  
management devices targeted at a wide range of  
portable applications. The bqSWITCHER™ series  
offers integrated synchronous PWM controller and  
power FETs, high-accuracy current and voltage  
regulation, charge preconditioning, charge status, and  
charge termination, in a small, thermally enhanced  
QFN package.  
Suitable For 1-, 2-, or 3-Cell Li-Ion and  
Li-Polymer Battery Packs  
Synchronous Fixed-Frequency PWM  
Controller Operating at 1.1 MHz With 0% to  
100% Duty Cycle  
•
•
High-Accuracy Voltage and Current Regulation  
The bqSWITCHER charges the battery in three  
phases: conditioning, constant current, and constant  
voltage. Charge is terminated based on user-  
selectable minimum current level. A programmable  
charge timer provides a safety backup for charge  
termination. The bqSWITCHER automatically restarts  
the charge cycle if the battery voltage falls below an  
internal threshold. The bqSWITCHER automatically  
enters sleep mode when VCC supply is removed.  
Status Outputs For LED or Host Processor  
Interface Indicates Charge-In-Progress, Charge  
Completion, Fault, and AC-Adapter Present  
Conditions  
•
20-V Absolute Maximum Voltage Rating on IN  
and OUT Pins  
•
•
•
Accurate High-Side Battery Current Sensing  
Battery Temperature Monitoring  
Automatic Sleep Mode for Low Power  
Consumption  
RHL PACKAGE  
(TOP VIEW BQ24123)  
•
Reverse Leakage Protection Prevents Battery  
Drainage  
•
•
•
Thermal Shutdown and Protection  
Built-In Battery Detection  
1
20  
19  
18  
17  
16  
15  
14  
13  
12  
STAT2  
PGND  
PGND  
CE  
2
3
4
5
6
7
8
9
STAT1  
IN  
Available in 20 pin 3,5 mm x 4,5 mm QFN  
Package  
IN  
PG  
SNS  
VCC  
TTC  
ISET1  
ISET2  
APPLICATIONS  
BAT  
•
•
•
•
•
Handheld Products  
CELLS  
TS  
Portable Media Players  
Industrial and Medical Equipment  
Portable Equipment  
11  
10  
Portable DVD Players  
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
bqSWITCHER, PowerPAD are trademarks of Texas Instruments.  
UNLESS OTHERWISE NOTED this document contains  
PRODUCTION DATA information current as of publication date.  
Products conform to specifications per the terms of Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2007, Texas Instruments Incorporated  
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BQ24123 替代型号

型号 品牌 替代类型 描述 数据表
BQ24125 TI

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