DS2782
Stand-Alone Fuel Gauge IC
2-wire stand-alone fuel-gauge IC calculates remaining battery capacity and simplifies software development
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Key Features
Applications/Uses
| Functions | Fuel Gauge |
| Battery Type | 1-2 Cell Li-Ion |
| Fuel Gauge Algorithm | FuelPack |
| Interface | 2-Wire |
| User Data Storage (Bytes) | 40 EEPROM |
| Parameters Measured | Current Temperature Voltage |
| End Equipment | Pack |
| VSUPPLY (V) (min) | 2.5 |
| VSUPPLY (V) (max) | 5.5 |
| Package/Pins | TDFN/10 TSSOP/8 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 3.6 |
Simplified Block Diagram
Technical Docs
| Data Sheet | Stand-Alone Fuel Gauge IC | Jun 22, 2009 | |
| App Note | Calibrating RSGAIN for the DS278x Family of Fuel Gauges | ||
| App Note | Storing Battery Fuel Gauge Parameters in DS2780 | ||
| App Note | Getting Started with the DS2780 | ||
| Tutorial | Important Design Considerations for Heart-Rate and Fitness Monitors | ||
| Tutorial | Introduction to Hearing Aids and Important Design Considerations |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
Parameters
| Functions | Fuel Gauge |
| Battery Type | 1-2 Cell Li-Ion |
| Fuel Gauge Algorithm | FuelPack |
| Interface | 2-Wire |
| User Data Storage (Bytes) | 40 EEPROM |
| Parameters Measured | Current Temperature Voltage |
| End Equipment | Pack |
| VSUPPLY (V) (min) | 2.5 |
| VSUPPLY (V) (max) | 5.5 |
| Package/Pins | TDFN/10 TSSOP/8 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 3.6 |
Key Features
- Precision Voltage, Temperature, and Current Measurement System
- Accurate Stable Internal Time Base
- 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 Tempco Calibration Allows the Use of Low-Cost Sense Resistors
- 24-Byte User EEPROM or 16-Byte User EEPROM and Unique 64-Bit ID
- Industry 2-Wire Interface with Programmable Slave Address
- Tiny 8-Pin TSSOP and 10-TDFN Packages Embed Easily in Thin Prismatic Cell Packs
Applications/Uses
- 3G Multimedia Wireless Handsets
- Digital Still Cameras
- Handheld PC Data Terminals
- Subnotebook Computers
Description
The DS2782 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17201 fuel gauge.
The DS2782 measures voltage, temperature and current, and estimates available capacity for rechargeable lithium ion and lithium-ion polymer batteries. Cell 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 reported in mAh remaining and percentage of full.Technical Docs
| Data Sheet | Stand-Alone Fuel Gauge IC | Jun 22, 2009 | |
| App Note | Calibrating RSGAIN for the DS278x Family of Fuel Gauges | ||
| App Note | Storing Battery Fuel Gauge Parameters in DS2780 | ||
| App Note | Getting Started with the DS2780 | ||
| Tutorial | Important Design Considerations for Heart-Rate and Fitness Monitors | ||
| Tutorial | Introduction to Hearing Aids and Important Design Considerations |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
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