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BQ2084DBTR-V143 PDF预览

BQ2084DBTR-V143

更新时间： 2024-10-28 03:35:31
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德州仪器 - TI /
页数 文件大小 规格书
71页 1162K
描述
SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

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BQ2084DBTR-V143 数据手册

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bq2084-V143  
RTT  
DBT  
www.ti.com  
SLUS732–SEPTEMBER 2006  
SBS v1.1-COMPLIANT GAS GAUGE FOR  
USE WITH THE bq29312  
FEATURES  
DESCRIPTION  
•
•
•
•
Provides Accurate Measurement of Available  
Charge in Li-Ion and Li-Polymer Batteries  
The bq2084-V143 SBS-compliant gas gauge IC for  
battery pack or in-system installation maintains an  
accurate record of available charge in Li-ion or  
Li-polymer batteries. The bq2084-V143 monitors  
capacity 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 bq29312 AFE protection  
IC to maximize functionality and safety and minimize  
component count and cost in smart battery circuits.  
Using information from the bq2084-V143, the host  
controller can manage remaining battery power to  
extend the system run time as much as possible.  
Supports the Smart Battery Specification  
(SBS) V1.1  
Integrated Time Base Removes Need for  
External Crystal with Optional Crystal input  
Works With the TI bq29312 Analog Front-End  
(AFE) Protection IC to Provide Complete Pack  
Electronics for 7.2-V, 10.8-V or 14.4-V Battery  
Packs With Few External Components  
•
•
•
Based on a Powerful Low-Power RISC CPU  
Core With High-Performance Peripherals  
The bq2084-V143 uses an integrating converter with  
continuous sampling for the measurement of battery  
charge and discharge currents. Optimized for  
coulomb counting in portable applications, the  
self-calibrating integrating converter has a resolution  
better than 0.65-nVh and an offset measurement  
error of less than 1-µV (typical). For voltage and  
temperature reporting, the bq2084-V143 uses a  
16-bit A-to-D converter. With the bq29312, the  
onboard ADC also monitors the pack and individual  
cell voltages in a battery pack and allows the  
bq2084-V143 to generate the control signals  
necessary to implement the cell balancing and the  
required safety protection for Li-ion and Li-polymer  
battery chemistries.  
Integrated Flash Memory Eliminates the Need  
for External Configuration EEPROM  
Uses 16-Bit Delta Sigma Converter for  
Accurate Voltage and Temperature  
Measurements  
•
Measures Charge Flow Using a High  
Resolution 16-Bit Integrating Converter  
– Better Than 0.65-nVh of Resolution  
– Self-Calibrating  
– Offset Error Less Than 1-µV  
•
•
•
Programmable Cell Modeling for Maximum  
Battery Fuel Gauge Accuracy  
Drives 3-, 4-, or 5-Segment LED Display for  
Remaining Capacity Indication  
The bq2084-V143 supports the Smart Battery Data  
(SBData) commands and charge-control functions. It  
communicates data using the System Management  
Bus (SMBus) 2-wire protocol. The data available  
Available in a 38-Pin TSSOP (DBT) Package  
include  
the  
battery's  
remaining  
capacity,  
APPLICATIONS  
temperature, voltage, current, and remaining  
run-time predictions.  
•
•
•
Notebook PCs  
Medical and Test Equipment  
Portable Instrumentation  
The bq2084-V143 provides LED drivers and a  
pushbutton input to depict remaining battery capacity  
from full to empty in 20%, 25%, or 33% increments  
with a 3-, 4-, or 5-segment display.  
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 © 2006, Texas Instruments Incorporated  
1234567...71

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BQ2084DBTR-V143 替代型号

型号 品牌 替代类型 描述 数据表
bq2084DBT-V150 TI

完全替代

 SBS v1.1-COMPLIANT GAS GAUGE WITH LED DELAY
BQ2084DBT-V143 TI

完全替代

 SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312
BQ2083DBTR-V1P3 TI

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 SBS COMPLIANT GAS GAUGE IC

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