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BQ20Z70-V150 PDF预览

BQ20Z70-V150

更新时间： 2024-10-29 11:10:55
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
20页 536K
描述
采用 Impedance Track™ 技术且符合 SBS 1.1 标准的电量监测计

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BQ20Z70-V150 数据手册

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bq20z70  
www.ti.com  
SLUS686B–NOVEMBER 2005–REVISED JULY 2007  
SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™  
TECHNOLOGY FOR USE WITH THE bq29330  
FEATURES  
APPLICATIONS  
•
•
•
Notebook PCs  
Medical and Test Equipment  
Portable Instrumentation  
•
Next Generation Patented Impedance Track™  
Technology accurately Measures Available  
Charge in Li-Ion and Li-Polymer Batteries  
•
•
•
•
•
Better than 1% Error Over Lifetime of the  
Battery  
DESCRIPTION  
Instant Accuracy – No Learning Cycle  
Required  
The bq20z70 SBS-compliant gas gauge IC,  
incorporating  
patented  
Impedance  
Track™  
technology, is designed for battery-pack or in-system  
installation. The bq20z70 measures and maintains  
an accurate record of available charge in Li-ion or  
Supports the Smart Battery Specification SBS  
V1.1  
Powerful 8-Bit RISC CPU With Ultra-Low  
Power Modes  
Li-polymer  
batteries  
using  
its  
integrated  
high-performance analog peripherals. The bq20z70  
monitors capacity change, battery impedance,  
open-circuit voltage, and other critical parameters of  
the battery pack, and reports the information to the  
system host controller over a serial-communication  
bus. It is designed to work with the bq29330 analog  
front-end (AFE) protection IC to maximize  
functionality and safety, and minimize component  
count and cost in smart battery circuits.  
Works With the TI bq29330 Analog Front-End  
(AFE) Protection IC to Provide Complete Pack  
Electronics Solution  
•
Full Array of Programmable Protection  
Features  
–
Voltage, Current and Temperature  
•
•
Fully Integrated High Accurate Clock  
Flexible Configuration for 2 to 4 Series Li-Ion  
and Li-Polymer Cells  
The Impedance Track 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.  
•
Integrated Field Programmable FLASH  
Memory Eliminates the Need for External  
Configuration Memory  
•
•
Smart Battery Charger Control Feature  
Two 16-Bit Delta-Sigma Converter  
AVAILABLE OPTIONS  
PACKAGE(1)  
–
Accurate Voltage and Temperature  
Measurements  
TA  
20-PIN TSSOP (PW)  
Tube  
20-PIN TSSOP (PW)  
Tape and Reel  
–
Integrating Coloumb Counter for Charge  
Flow  
–40°C to  
85°C  
bq20z70PW(2)  
bq20z70PWR(3)  
–
–
Better Than 0.65 nVh of Resolution  
Self-Calibrating  
(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  
•
•
Supports SHA-1 Authentication  
20-Pin TSSOP (PW)  
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.  
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 © 2005–2007, Texas Instruments Incorporated  
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