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DS2756E+TR

Description
High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode
File Size311KB,27 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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DS2756E+TR Overview

High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode

19-4633; 5/09
DS2756
High-Accuracy Battery Fuel Gauge
with Programmable Suspend Mode
www.maxim-ic.com
GENERAL DESCRIPTION
The DS2756 high-precision battery fuel gauge is a
data-acquisition and information-storage device
tailored for cost-sensitive and space-constrained 1-
cell Li+/polymer battery-pack applications. The
DS2756 provides the key hardware components
required to accurately estimate remaining capacity by
integrating low-power, precision measurements of
temperature,
voltage,
current,
and
current
accumulation, as well as nonvolatile (NV) data
storage, into the small footprint of a 3.0mm x 4.4mm
8-pin TSSOP package.
Through its 1-Wire interface, the DS2756 gives the
host system read/write access to status and control
registers, instrumentation registers, and general-
purpose data storage. Each device has a unique
factory-programmed 64-bit net address that allows it
to be individually addressed by the host system,
supporting multibattery operation.
FEATURES
Programmable Suspend Mode
Accurate Current Accumulation
-
2% ±4V over ±64mV Input Range
-
2% ±200A over ±3.2A with 20m Sense
Current Measurement
-
9-Bit Snapshot Measurement
-
12-Bit Average Updated Every 88ms
-
15-Bit Average Updated Every 2.8s
Voltage Measurement
-
9-Bit Snapshot Measurement
-
10-Bit Average Updated Every 4ms
Temperature Measurement
-
10-Bit with 0.125C Resolution
Snapshot Mode Allows Instantaneous Power
Measurement
Host Alerted When Accumulated Current or
Temperature Exceeds Programmable Limits
96 Bytes of Lockable EEPROM
8 Bytes of General-Purpose SRAM
Dallas 1-Wire Interface with Unique 64-Bit
Address and Standard or Overdrive Timing
3mm Dimension of 8-Pin TSSOP Package
Allows Mounting on Side of Thin Prismatic
Li+ and Li+/Polymer Cells
TYPICAL OPERATING CIRCUIT
ORDERING INFORMATION
PART
DS2756E+
DS2756E+T&R
TEMP RANGE
-20°C to +70°C
-20°C to +70°C
PIN-PACKAGE
8 TSSOP
DS2756E+ on
Tape-and-Reel
+ Denotes lead(Pb)-free/RoHS-compliant package.
PIN CONFIGURATION
V
IN
V
SS
PIO
V
DD
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
1
1
2
2
3
2
4
8
7
6
5
DQ
SNS
IS2
IS1
DS2756E
TSSOP Package
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 27

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