DS2781

PRODUCTION

1-Cell or 2-Cell Stand-Alone Fuel Gauge IC

Complete Fuel Gauge IC for Accurate Remaining Battery Capacity Readings for 1- or 2-Cell Applications

Data Sheet (Rev. 6) Product Selection Table

Part Models: 5
1ku List Price: Starting From $4.96

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Part Details

Precision Voltage, Temperature, and Current Measurement System
Operates in One-Cell or Two--Cell Applications
Accurate, Temperature Stable Internal Timebase
Absolute and Relative Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Battery Cell Characteristics
Accurate Warning of Low Battery Conditions
Automatic Backup of Coulomb Count and Age Estimation to Nonvolatile (NV) EEPROM
Gain and Temperature Coefficient Calibration Allows the Use of Low-Cost Sense Resistors
24-Byte Parameter EEPROM
16-Byte User EEPROM
Unique ID and Multidrop 1-Wire® Interface
Tiny 8-Pin TSSOP and 10-Pin TDFN (3mm x 4mm) Packages Embed Easily in Thin Prismatic Cell Packs

Part Models: 5
1ku List Price: Starting From $4.96

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
DS2781E+	Thin Shrink Small-Outline Package	Material Declaration Reliablity Data	Ultra Librarian SamacSys
DS2781E+T&R	Thin Shrink Small-Outline Package	Material Declaration Reliablity Data	Ultra Librarian SamacSys
DS2781G+	Thin Dual Flatpack No Leads	Material Declaration Reliablity Data	Ultra Librarian SamacSys
DS2781G+T&R	Thin Dual Flatpack No Leads	Material Declaration Reliablity Data	Ultra Librarian SamacSys
DS2781G-A2+T&R	Thin Dual Flatpack No Leads	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

Software Development 1

DS2781K Evaluation Kit Software, 1.98.0

Evaluation Kits

Evaluation Kit for the DS2781

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Features and Benefits

Demonstrates the capabilities of the DS2781 Standalone Fuel Gauge, including:
- Estimation of available capacity for Li+ cells
- Voltage measurement
- Current measurement
- Current accumulation
- Temperature measurement
- Information storage
- Identification
Interfaces to the USB port of a PC running Windows® XP or older operating system

Product Details

The DS2781 evaluation kit (EV kit) makes performance evaluation, software development, and prototyping with the DS2781 Standalone Fuel Gauge easy. The evaluation board interfaces to a PC through a DS9123O USB Port Adapter and RJ-11 cable connection.

The DS2781 EV kit evaluation software gives the user complete control of all functions of the DS2781. Separate control tabs allow the user access to all EEPROM and RAM memory locations, all control registers, and real-time updates of all monitored parameters. The software also incorporates a datalogging feature to monitor a cell over time.

The evaluation board circuit is designed to provide the DS2781 with accurate parameter measurements. Kit demonstration boards will vary as they are improved upon over time.

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 2