DS2780

Stand-Alone Fuel Gauge IC

Stand-Alone Fuel-Gauge IC Calculates Remaining Battery Capacity and Simplifies Software Development


Please check latest availability status for a specific part variant.

Description

The DS2780 remains in production, however, for new projects, we recommend ModelGauge m5 MAX17211 fuel gauge.

The DS2780 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.
DS2780 measures voltage, temperature and current, and estimates available capacity for rechargeable Lithium Ion and Lithium Ion Polymer batteries | Typical Operating Circuit DS2780 measures voltage, temperature and current, and estimates available capacity for rechargeable Lithium Ion and Lithium Ion Polymer batteries | Typical Operating Circuit Enlarge+

Key Features

  • Precision Voltage, Temperature, and Current Measurement System
  • Internal Time Base is Accurate and Temperature Stable
  • 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 Battery/Application Parameter EEPROM
  • 16-Byte User EEPROM
  • Unique ID and Multidrop 1-Wire® Interface
  • Tiny 8-pin TSSOP & 10-pin TDFN Package Embeds Easily in Battery Packs Using Thin Prismatic Cells

Applications/Uses

  • 3G Multimedia Wireless Handsets
  • Digital Still Cameras
  • Handheld PC Data Terminals
  • Subnotebook Computers

See parametric specs for Battery Fuel Gauges, Protectors, and Monitors (52)


Part NumberFunctionsBattery TypeInterfaceUser Data Storage
(Bytes)
Parameters MeasuredFuel Gauge AlgorithmApplicationsVSUPPLY
(V)
VSUPPLY
(V)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxSee Notes
DS2780 Fuel Gauge1-2 Cell Li-Ion1-Wire40 EEPROM
Current
Temperature
Voltage
FuelPackPack2.55.5
TDFN/10
TSSOP/8
-40 to +85$3.01 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

DS2780EVKIT: Standalone Fuel Gauge IC Evaluation Kit
Product Reliability Reports: DS2780.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
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Related Resources


MAX17320
2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and SHA-256 Authentication

  • Battery Health + Programmable Safety/Protection
  • ModelGauge m5 EZ Algorithm
  • Precision Measurement Without Calibration

MAX17823B
12-Channel High-Voltage Data Acquisition System

  • AEC-Q100 Grade 2 Temperature Range
  • Operating Voltage from 9V to 65V
  • Ultra-Low-Power Operation