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BQ26500PWG4 PDF预览

BQ26500PWG4

更新时间： 2024-02-15 08:10:38
品牌 Logo 应用领域
德州仪器 - TI 电池
页数 文件大小 规格书
30页 690K
描述
SINGLE-CELL LI-ION AND LI-POL BATTERY

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BQ26500PWG4 数据手册

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SLUS567A − JUNE, 2003 − REVISED OCTOBER 2003  
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ꢘꢐꢜ ꢈꢋꢖꢝ  
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FEATURES  
APPLICATIONS  
D
Reports Accurate State-of-Charge in Li-Ion  
and Li-Pol Cells, No System Processor  
Calculations Needed  
D
D
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D
PDAs  
Smart Phones  
MP3 Players  
D
D
Reports Cell Temperature and Voltage  
Digital Cameras  
High-Accuracy Coulometric Charge and  
Discharge Current Integration with  
Automatic Offset Cancellation  
Internet Appliances  
Handheld Devices  
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D
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Requires No Offset Calibration  
Programmable Input/Output Port  
DESCRIPTION  
Internal Time-Base Eliminates External  
Crystal Oscillator  
The bq26500, the first in the bqJUNIORt family  
of advanced gas gauge device for handhald  
applications, is a highly accurate standalone  
single-cell Li-Ion and Li-Pol battery capacity  
monitoring and reporting device targeted at space  
limited portable applications. The device monitors  
a voltage drop across a small current sense  
resistor connected in series with the battery to  
determine charge and discharge activity of the  
battery. Compensations for battery temperature,  
self-discharge, and rate of discharge are applied  
to the charge counter to provide available capacity  
across a wide range of operating conditions.  
Battery capacity is automatically recalibrated, or  
learned, in the course of a discharge cycle from full  
to empty. Internal registers include available  
capacity, cell temperature and voltage,  
state-of-charge, and status and control registers.  
D
Four Automatic Low-Power Operating Modes  
− Active: < 100 µA  
− Sleep: < 2.5 µA  
− Ship: < 1.7 µA  
− Hibernate: < 1.5 µA  
Small 8-Pin TSSOP Package  
D
SIMPLIFIED APPLICATION  
PACK+  
UDG−03038  
Li-Ion  
or  
Li-Pol  
+
bq26500  
1
2
3
4
RBI GPIO  
VCC SRP  
VSS SRN  
HDQ BAT  
8
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6
5
The bq26500 can operate directly from single-cell  
Li-Ion and Li-Pol batteries and communicates to  
the system over a simple one-wire bi-directional  
serial interface. The 5-kbits/s HDQ bus interface  
reduces communication overhead in the external  
microcontroller.  
HDQ  
Protection  
Controller  
PACK−  
Battery Pack  
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.  
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Copyright 2003, Texas Instruments Incorporated  
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中文翻译

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BQ26500PWG4 替代型号

型号 品牌 替代类型 描述 数据表
BQ26500PWR TI

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