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BQ24610

更新时间： 2024-11-27 06:44:11
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德州仪器 - TI 电池开关
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33页 1623K
描述
Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

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BQ24610 数据手册

 浏览型号BQ24610的Datasheet PDF文件第2页浏览型号BQ24610的Datasheet PDF文件第3页浏览型号BQ24610的Datasheet PDF文件第4页浏览型号BQ24610的Datasheet PDF文件第5页浏览型号BQ24610的Datasheet PDF文件第6页浏览型号BQ24610的Datasheet PDF文件第7页 
bq24610  
bq24617  
www.ti.com  
SLUS892 –DECEMBER 2009  
Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System  
Power Selector and Low Iq  
Check for Samples: bq24610, bq24617  
24-pin, 4×4-mm2 QFN package  
1
FEATURES  
•
•
•
•
•
•
600 kHz NMOS-NMOS Synchronous Buck  
Converter  
Energy Star Low Quiescent Current Iq  
–
–
< 15 µA Off-State Battery Discharge current  
< 1.5 mA Off-State Input Quiescent Current  
Stand-alone Charger Support for Li-Ion or  
Li-Polymer  
5V–28V VCC Input Operating Range and  
Support 1-6 Battery Cells (bq24610)  
APPLICATIONS  
•
Netbook, Mobile Internet Device and  
Ultra-Mobile PC  
Personal Digital Assistants  
Handheld Terminals  
Industrial and Medical Equipment  
Portable Equipment  
5V–24V VCC Input Operating Range and  
Support 1-5 Battery Cells (bq24617)  
•
•
•
•
•
•
Up to 10A Charge Current and Adapter Current  
High-Accuracy Voltage and Current Regulation  
–
–
–
±0.5% Charge Voltage Accuracy  
±3% Charge Current Accuracy  
±3% Adapter Current Accuracy  
DESCRIPTION  
The bq24610/7 is highly integrated Li-ion or  
Li-polymer switch-mode battery charge controller. It  
offers a constant-frequency synchronous switching  
PWM controller with high accuracy charge current  
and voltage regulation, charge preconditioning,  
termination, adapter current regulation and charge  
status monitoring.  
•
•
Integration  
–
Automatic System Power Selection from  
Adapter or Battery  
–
–
–
Internal Loop Compensation  
Internal Soft Start  
Dynamic Power Management  
The bq24610/7 charges the battery in three phases:  
preconditioning, constant current, and constant  
voltage. Charge is terminated when the current  
Safety Protection  
–
–
Input Over-Voltage Protection  
reaches  
a
minimum user-selectable level.  
A
Battery Thermistor Sense Hot/Cold Charge  
Suspend  
programmable charge timer provides  
a
safety  
backup. The bq24610/7 automatically restarts the  
charge cycle if the battery voltage falls below an  
internal threshold, and enters a low-quiescent current  
sleep mode when the input voltage falls below the  
battery voltage.  
–
–
–
–
–
–
–
Battery Detection  
Reverse Protection Input FET  
Programmable Safety Timer  
Charge Over-Current Protection  
Battery Short Protection  
Battery Over-Voltage Protection  
Thermal Shutdown  
PACKAGE AND PIN-OUT  
24 23  
22 21  
20  
19  
•
Status Outputs  
18  
17  
1
2
REGN  
GND  
ACN  
ACP  
OAS  
(bq24610)  
OFB  
–
–
Adapter Present  
Charger Operation Status  
16  
15  
14  
13  
3
4
5
6
ACDRV  
CE  
ACSET  
ISET2  
SRP  
(bq24617)  
•
•
Charge Enable Pin  
QFN-24  
TOP VIEW  
STAT1  
TS  
6V Gate Drive for Synchronous Buck  
Converter  
SRN  
7
8
9
10  
11  
12  
•
30ns Driver Dead-time and 99.5% Max  
Effective Duty Cycle  
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 © 2009, Texas Instruments Incorporated  
1234567...33

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