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BQ20Z45-R1

更新时间： 2024-10-28 06:44:11
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德州仪器 - TI 仪表
页数 文件大小 规格书
18页 240K
描述
SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Track™

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BQ20Z45-R1 数据手册

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bq20z45-R1  
www.ti.com  
SLUS992 –DECEMBER 2009  
SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Track™  
Check for Samples: bq20z45-R1  
1
FEATURES  
DESCRIPTION  
2
•
Next Generation Patented Impedance Track™  
Technology Accurately Measures Available  
Charge in Li-Ion and Li-Polymer Batteries  
The bq20z45-R1 SBS-compliant gas gauge and  
protection IC is a single IC solution designed for  
battery-pack  
or  
in-system  
installation.  
The  
–
Better Than 1% Error Over the Lifetime of  
the Battery  
bq20z45-R1 measures and maintains an accurate  
record of available charge in Li-ion or Li-polymer  
batteries using its integrated high-performance  
analog peripherals, monitors capacity change, battery  
impedance, open-circuit voltage, and other critical  
parameters of the battery pack as well and reports  
the information to the system host controller over a  
serial-communication bus. Together with the  
integrated analog front-end (AFE) short-circuit and  
overload protection, the bq20z45-R1 maximizes  
functionality and safety while minimizing external  
component count, cost, and size in smart battery  
circuits.  
•
•
•
•
Supports the Smart Battery Specification  
SBS V1.1  
Flexible Configuration for 2 to 4 Series Li-Ion  
and Li-Polymer Cells  
Powerful 8-Bit RISC CPU With Ultralow Power  
Modes  
Full Array of Programmable Protection  
Features  
–
Voltage, Current, and Temperature  
•
•
Satisfies JEITA Guidelines  
The implemented Impedance Track™ gas gauging  
technology continuously analyzes the battery  
impedance, resulting in superior gas-gauging  
accuracy. This enables remaining capacity to be  
calculated with discharge rate, temperature, and cell  
aging all accounted for during each stage of every  
cycle with high accuracy.  
Added Flexibility to Handle More Complex  
Charging Profiles  
•
•
•
Lifetime Data Logging  
Supports SHA-1 Authentication  
Complete Battery Protection and Gas Gauge  
Solution in One Package  
•
Available in a 38-Pin TSSOP (DBT) package  
APPLICATIONS  
•
•
•
Notebook PCs  
Medical and Test Equipment  
Portable Instrumentation  
Table 1. AVAILABLE OPTIONS  
PACKAGE(1)  
TA  
38-PIN TSSOP (DBT) Tube  
38-PIN TSSOP (DBT) Tape and Reel  
–40°C to 85°C  
bq20z45-R1DBT(2)  
bq20z45-R1DBTR(3)  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
website at www.ti.com.  
(2) A single tube quantity is 50 units.  
(3) A single reel quantity is 2000 units  
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
Impedance Track is a trademark of Texas Instruments.  
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  
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