Fuel Gauge. DS2780 Datasheet

DS2780 Gauge. Datasheet pdf. Equivalent

Part DS2780
Description Standalone Fuel Gauge
Feature www.DataSheet4U.com DS2780 Stand-Alone Fuel Gauge IC www.maxim-ic.com GENERAL DESCRIPTION The DS27.
Manufacture Maxim Integrated Products
Datasheet
Download DS2780 Datasheet




DS2780
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-WireInterface
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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DS2780
DS2780 Standalone Fuel Gauge IC
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to VSS
Voltage on VIN Relative to VSS
Operating Temperature Range
Storage Temperature Range
Soldering Temperature (10s)
-0.3V to +6.0V
-0.3V to (VDD + 0.3V)
-40°C to +85°C
-55°C to +125°C
See JEDEC J-STD-020
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED DC OPERATING CHARACTERISTICS
(VDD = 2.5V to 4.5V, TA = -20°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Supply Voltage
OVD Voltage
DQ, PIO Voltage Range
SYMBOL
VDD
CONDITIONS
(Note 1)
(Note 1)
(Note 1)
MIN
+2.5
-0.3
-0.3
TYP
MAX
+4.5
+4.5
+5.5
UNITS
V
V
V
DC ELECTRICAL CHARACTERISTICS
(VDD = 2.5V to 4.5V, TA = -20°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
MAX
ACTIVE Current
SLEEP Mode Current
Input Logic High: DQ, PIO
Input Logic Low: DQ, PIO
Output Logic Low: DQ, PIO
Pulldown Current: DQ, PIO
Input Logic High: OVD
Input Logic Low: OVD
VIN Input Resistance
DQ Capacitance
DQ SLEEP Timeout
Undervoltage SLEEP
Threshold
IACTIVE
ISLEEP
VIH
VIL
VOL
IPD
VIH
VIL
RIN
CDQ
tSLEEP
VSLEEP
2.5V VDD 4.2V
2.5V VDD 4.2V
(Note 1)
(Note 1)
IOL = 4mA (Note 1)
VDQ, VPIO = 0.4V
(Note 1)
(Note 1)
DQ < VIL (Note 5)
(Note 1)
1.5
VDD –
0.2
15
1.5
2.40
65 95
105
13
0.6
0.4
0.2
VSS + 0.2
50
2.0 2.5
2.45
2.50
UNITS
µA
µA
V
V
V
µA
V
V
M
pF
s
V
ELECTRICAL CHARACTERISTICS: TEMPERATURE, VOLTAGE, CURRENT
(VCC = 2.5V to 4.5V, TA = -20°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
Temperature Resolution
Temperature Error
Voltage Resolution
Voltage Full-Scale
Voltage Error
Current Resolution
TLSB
TERR
VLSB
VFS
VERR
ILSB
0.125
±3
4.88
0 4.992
±50
1.56
UNITS
°C
°C
mV
V
mV
µV
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