DS2756 查看數據表（PDF） - Maxim Integrated

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DS2756

High-Accuracy Battery Fuel Gauge with Programmable Suspend Mode

Maxim Integrated 

19-4633; 5/09

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.

TYPICAL OPERATING CIRCUIT

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

DS2756

High-Accuracy Battery Fuel Gauge

with Programmable Suspend Mode

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

ORDERING INFORMATION

PART

DS2756E+

TEMP RANGE PIN-PACKAGE

-20°C to +70°C 8 TSSOP

DS2756E+T&R

-20°C to +70°C

DS2756E+ on

Tape-and-Reel

+ Denotes lead(Pb)-free/RoHS-compliant package.

PIN CONFIGURATION

VIN 11

VSS 22

PIO 3

VDD 24

8 DQ

7 SNS

6 IS2

5 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.

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