MAXIM INTEGRATED DS2780 Standalone Fuel Gauge IC User's Manual
Summary
The DS2780 is a high-precision, standalone fuel gauge IC designed for monitoring rechargeable Li-Ion and Li-Polymer batteries. It accurately measures voltage, temperature, and current while providing reliable estimates of available charge capacity and State of Charge via Coulomb Count technology. Essential for battery management in portable electronics (e.g., cameras, handheld terminals), this manual provides comprehensive technical specifications, operational guidelines, pin configurations, and integration details necessary for seamless system design.
Page 1 Text Content
DS2780
Standalone Fuel Gauge IC
www.maxim-ic.com
GENERAL DESCRIPTION FEATURES The DS2780 measures voltage, temperature and Precision Voltage, Temperature, and Current current, and estimates available capacity for Measurement System rechargeable Lithium Ion and Lithium Ion Polymer Internal Time Base is Accurate and Temperature batteries. Cell characteristics and application Stable parameters used in the calculations are stored in on- Absolute and Relative Capacity Estimated from chip EEPROM. The available capacity registers Coulomb Count, Discharge Rate, Temperature report a conservative estimate of the amount of and Battery Cell Characteristics charge that can be removed given the current Accurate Warning of Low Battery Conditions temperature, discharge rate, stored charge and
Automatic Backup of Coulomb Count and Age
application parameters. Capacity estimation reported
Estimation to Nonvolatile (NV) EEPROM
in m Ah remaining and percentage of full.
Gain and Tempco Calibration Allows the Use of Low-Cost Sense Resistors
APPLICATIONS 24-Byte Battery/Application Parameter EEPROM
16-Byte User EEPROM
Digital Still Cameras
Unique ID and Multidrop 1-Wire® Interface
Sub-Notebook Computers
Tiny 8-pin TSSOP & 10-pin TDFN Package Handheld PC Data Terminals Embeds Easily in Battery Packs Using Thin Prismatic Cells
3G Multimedia Wireless Handsets
TYPICAL OPERATING CIRCUIT PIN CONFIGURATION
DS2780
DQ 5 4 VDD
1 Cell
PIO 8 3 VIN
Li-Ion NC 1 6 OVD Battery
SNS 7 2 VSS
TSSOP-8
Protection Circuit
ORDERING INFORMATION PART MARKING PACKAGE INFORMATION DS2780E 2780 TSSOP DS2780E/T&R 2780 TSSOP Tape-and-Reel DS2780E+ 2780 TSSOP DS2780E+T&R 2780 TSSOP Tape-and-Reel DS2780G+ 2780 TDFN DS2780G+T&R 2780 TDFN 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 29 REV: 050907
Page Summary Contents For MAXIM INTEGRATED DS2780 Standalone Fuel Gauge IC User's Manual
Manual Details
| Brand | Maxim Integrated |
|---|---|
| Pages | 29 |
| File Size | 436.20 KB |
| Published | May 26, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What types of batteries can the DS2780 measure?
It measures rechargeable Lithium Ion and Lithium-Ion Polymer batteries.
How does the DS2780 estimate remaining battery charge?
It estimates available capacity and reports a conservative estimate in mAh remaining and percentage of full.
Does the device provide temperature compensation for accuracy?
Yes, it allows Gain and Tempco Calibration to ensure accurate results.
What is the maximum operating temperature range?
The DS2780 operates reliably from -40°C to +85°C.
How are capacity estimates saved when power is lost?
Coulomb Count and Age tracking can be automatically backed up and restored to Nonvolatile (NV) EEPROM.