DS2782_09 Datasheet, PDF (1/28 Pages) Maxim Integrated Products – Stand-Alone Fuel Gauge IC

19-4635; 5/09
DS2782
Stand-Alone Fuel Gauge IC
www.maxim-ic.com
GENERAL DESCRIPTION
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.
PIN CONFIGURATIONS
APPLICATIONS
Digital Still Cameras
Sub-Notebook Computers
Handheld PC Data Terminals
3G Multimedia Wireless Handsets
FEATURES
 Precision Voltage, Temperature, and Current
Measurement System
TYPICAL OPERATING CIRCUIT
 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
ORDERING INFORMATION
PART
DS2782E+
DS2782E+T&R
DS2782G+
DS2782G+T&R
PIN-PACKAGE
8 TSSOP
8 TSSOP
10 TDFN-EP*
10 TDFN-EP*
TOP MARK
2782+
2782+
2782+
2782+
Note: To order devices with the unique 64-bit ID option, contact Maxim sales.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
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.
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