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BQ2085

更新时间： 2024-10-27 22:48:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
56页	813K
描述
SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

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中文翻译

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数据手册
替代型号

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BQ2085 数据手册

bq2085

SLUS541 – OCTOBER 2002

SBS-COMPLIANT GAS GAUGE IC

FOR USE WITH THE bq29311

Programmable Cell Modeling for Maximum

Battery Fuel Gauge Accuracy

FEATURES

Provides Accurate Measurement of Available

Charge in Li-Ion and Li-Polymer Batteries

Drives 3-, 4-, or 5-Segment LED Display for

Remaining Capacity Indication

Supports the Smart Battery Specification

(SBS) V1.1

38-Pin TSSOP (DBT)

Integrated Time Base Removes Need for

External Crystal

APPLICATIONS

Notebook PCs

Works With the TI bq29311 Analog Front End

(AFE) Protection IC to Provide Complete Pack

Electronics for 10.8-V or 14.4-V Battery Packs

With Few External Components

Medical and Test Equipment

Portable Instrumentation

DESCRIPTION

Based on a Powerful Low-Power RISC CPU

Core With High-Performance Peripherals

The bq2085 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 bq2085 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

bq29311 analog front-end (AFE) protection IC to

maximize functionality and safety and minimize

component count and cost in smart battery circuits.

Using information from the bq2085, the host controller

can manage remaining battery power to extend the

system run time as much as possible.

Integrated FLASH Memory Eliminates the

Need for External Configuration EEPROM

Measures Charge Flow Using a High

Resolution 16-Bit Integrating Converter

– Better Than 3-nVh of Resolution

– Self-Calibrating

– Offset Error Less Than 1-µV

Uses 16-Bit Delta Sigma Converter for

Accurate Voltage and Temperature

Measurements

BLOCK DIAGRAM

Pack+

Charge/Discharge

Power FETs

LDO

Supply Voltage

–

Li-Ion

Cells

bq29311

SMBus

Glueless

Interface

bq2085

Level

Translator

–

Cell Inputs

Safety Control

Temp

Sensor

ADC

Voltage

512 Bytes

Config.

FLASH

Integrating

ADC

Coulomb

Counting

Sense

Resistor

(10 mΩ - 20 mΩ)

EPROM

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

12 3 4 5 6 7...56

中文翻译

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BQ2085 替代型号

型号	品牌	替代类型	描述	数据表
BQ2085-V1P3	TI	功能相似	SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

与BQ2085相关器件

型号	品牌	获取价格	描述	数据表
BQ20851	TI	获取价格	SBS COMPLIANT GAS GAUGE IC FOR USE WITH THE BQ29311
BQ20851DBT	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, PLASTIC, TSSOP-38
BQ20851DBTR	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, PLASTIC, TSSOP-38
BQ20851DBTRG4	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, PLASTIC, TSSOP-38
BQ20851DBTR-V1P2	TI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO38, PLASTIC, TSSOP-38
BQ20851-V1P2	TI	获取价格	SBS COMPLIANT GAS GAUGE IC FOR USE WITH THE BQ29311
BQ2085DBT	TI	获取价格	SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311
BQ2085DBTG4	TI	获取价格	SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311
BQ2085DBTR	TI	获取价格	SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311
BQ2085DBTRG4	TI	获取价格	SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

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