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BQ20851DBT

更新时间： 2024-10-28 15:28:47
品牌 Logo 应用领域
德州仪器 - TI 光电二极管
页数 文件大小 规格书
52页 442K
描述
1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14, PLASTIC, TSSOP-38

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中文翻译

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BQ20851DBT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP, TSOP38,.25,20针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.79
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G38JESD-609代码：e4
长度：9.7 mm湿度敏感等级：2
信道数量：1功能数量：1
端子数量：38最高工作温度：85 °C
最低工作温度：-20 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSOP38,.25,20
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.2 mm最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：3 V标称供电电压 (Vsup)：3.3 V
表面贴装：YES温度等级：OTHER
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

BQ20851DBT 数据手册

 浏览型号BQ20851DBT的Datasheet PDF文件第2页浏览型号BQ20851DBT的Datasheet PDF文件第3页浏览型号BQ20851DBT的Datasheet PDF文件第4页浏览型号BQ20851DBT的Datasheet PDF文件第5页浏览型号BQ20851DBT的Datasheet PDF文件第6页浏览型号BQ20851DBT的Datasheet PDF文件第7页 
bq20851  
www.ti.com  
SLUS551 – JUNE 2003  
SBS-COMPLIANT GAS GAUGE IC  
FOR USE WITH THE bq29311  
D
D
D
Programmable Cell Modeling for Maximum  
Battery Fuel Gauge Accuracy  
FEATURES  
D
D
D
D
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  
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  
D
Notebook PCs  
DESCRIPTION  
D
D
D
Based on a Powerful Low-Power RISC CPU  
Core With High-Performance Peripherals  
The bq20851 SBS-compliant gas gauge IC for battery  
pack installation maintains an accurate record of available  
charge in Li-ion or Li-polymer batteries. The bq20851  
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 bq20851, 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  
D
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  
bq20851  
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–  
Pleasebe 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.  
Copyright 2003, Texas Instruments Incorporated  
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