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DS2781G/T&R+W PDF预览

DS2781G/T&R+W

更新时间: 2024-09-09 13:07:27
品牌 Logo 应用领域
美信 - MAXIM 电池仪表
页数 文件大小 规格书
30页 330K
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DS2781G/T&R+W 数据手册

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DS2781  
1-Cell or 2-Cell  
Standalone Fuel Gauge IC  
GENERAL DESCRIPTION  
FEATURES  
The DS2781 measures voltage, temperature, and  
current, and estimates available capacity for  
rechargeable Lithium-Ion and Lithium-Ion Polymer  
batteries. Cell stack characteristics and application  
parameters used in the calculations are stored in on-  
chip EEPROM. The available capacity registers  
report a conservative estimate of the amount of  
charge that can be removed given the current  
temperature, discharge rate, stored charge and  
application parameters. Capacity estimation is  
reported in milliamp hours remaining and percentage  
of full.  
Cꢀ Precision Voltage, Temperature, and Current  
Measurement System  
Cꢀ Operates in One-Cell or Two--Cell Applications  
Cꢀ Accurate, Temperature Stable Internal Time  
Base  
Cꢀ Absolute and Relative Capacity Estimated from  
Coulomb Count, Discharge Rate, Temperature,  
and Battery Cell Characteristics  
Cꢀ Accurate Warning of Low Battery Conditions  
Cꢀ Automatic Backup of Coulomb Count and Age  
Estimation to Nonvolatile (NV) EEPROM  
Cꢀ Gain and Tempco Calibration Allows the Use of  
Low-Cost Sense Resistors  
APPLICATIONS  
Digital Video Cameras  
Cꢀ 24-Byte Battery/Application Parameter EEPROM  
Cꢀ 16-Byte User EEPROM  
Commercial Two-Way Radios  
Industrial PDAs and Handheld PC Data Terminals  
Portable GPS Navigation Systems  
Cꢀ Unique ID and Multidrop 1-Wire Interface  
Cꢀ Tiny 8-Pin TSSOP Package Embeds Easily in  
Battery Packs Using Thin Prismatic Cells  
TYPICAL OPERATING CIRCUIT  
PIN CONFIGURATION  
TOP VIEW  
TSSOP-8  
P+  
DS2781  
PIO  
VB  
1
2
3
4
8
7
DQ  
DQ  
VDD  
VIN  
VB  
SNS  
VSS  
PIO  
OVD  
SNS  
OVD  
DQ  
VIN  
6
5
VSS  
VPLS  
Protection  
Circuit  
P-  
ORDERING INFORMATION  
PART  
MARKING  
PACKAGE  
DS2781E+  
2781  
TSSOP  
DS2781E+T&R  
2781  
Tape-and-Reel  
+ Denotes lead-free package.  
1-Wire is a registered trademark of Dallas Semiconductor.  
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device  
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.  
1 of 30  
REV: 010906  

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