DS2780_09 Datasheet, PDF (1/31 Pages) Maxim Integrated Products – Standalone Fuel Gauge IC

19-4634; 5/09
www.maxim-ic.com
GENERAL DESCRIPTION
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.
APPLICATIONS
Digital Still Cameras
Sub-Notebook Computers
Handheld PC Data Terminals
3G Multimedia Wireless Handsets
TYPICAL OPERATING CIRCUIT
PK+
DATA ¹⁵⁰
5.6V
PK-
DS2780
DQ 5
PIO 8
NC 1
SNS 7
4 VDD
3 VIN
6 OVD
2 VSS
TSSOP-8
RSNS
500
1K
1 Cell
Li-Ion
Battery
0.1uF
Protection
Circuit
DS2780
Standalone Fuel Gauge IC
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
PIN CONFIGURATION
ORDERING INFORMATION
PART
DS2780E
DS2780E/T&R
DS2780E+
DS2780E+T&R
DS2780G+
DS2780G+T&R
MARKING
2780
2780
2780
2780
2780
2780
PACKAGE INFORMATION
TSSOP
TSSOP Tape-and-Reel
TSSOP
TSSOP Tape-and-Reel
TDFN
TDFN Tape-and-Reel
+Denotes lead(Pb)-free/RoHS-compliant package.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
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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