DS2788 MAXIM [Maxim Integrated Products], DS2788 Datasheet

DS2788

Manufacturer Part Number

DS2788

Description

Stand-Alone Fuel-Gauge IC with LED Display Drivers

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.DS2788.pdf (30 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

DS2788E+

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

HardFindElectronics Ltd

Part Number:

DS2788E+T&R

Manufacturer:

MAXIM

Quantity:

5 000

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Download datasheet (339Kb)

The DS2788 measures voltage, temperature, and cur-

rent, and estimates available capacity for rechargeable

lithium-ion (Li+) and Li+ polymer batteries. Cell charac-

teristics and application parameters used in the calcu-

lations 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 cur-

rent temperature, discharge rate, stored charge, and

application parameters. Capacity estimation is reported

in mAh remaining and percentage of full.

LED display drivers and a debounced input make dis-

play of the capacity information easy. The LED pins can

directly sink current, requiring only a resistor for setting

the current in the LED display, thus reducing space and

cost.

Rev 0; 10/07

Typical Operating Circuit appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

LED2

LED1

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Electric Vehicles

Uninterruptible Power Supply

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________________________________________________________________ Maxim Integrated Products

General Description

DS2788

TSSOP

Pin Configuration

Applications

Stand-Alone Fuel-Gauge IC with

LED3

LED4

LED5

PIO

SNS

VMA

♦ Five 30mA Open-Drain Drivers for Driving LED

♦ Debounced Fuel-Gauge Display Enable

♦ Internal Voltage Measurement Gain Register for

♦ Pin for Driving FETs to Enable Voltage-Divider

♦ Precision Voltage, Temperature, and Current

♦ Accurate, Temperature-Stable, Internal Time Base

♦ Absolute and Relative Capacity Estimated from

♦ Accurate Warning of Low Battery Conditions

♦ Automatic Backup of Coulomb Count and Age

♦ Gain and Tempco Calibration Allows the Use of

♦ 24-Byte Battery/Application Parameter EEPROM

♦ 16-Byte User EEPROM

♦ Unique ID and Multidrop 1-Wire

♦ 14-Pin TSSOP Package

+ Denotes a lead-free package.

T&R = Tape and reel.

1-Wire is a registered trademark of Dallas Semiconductor Corp.,

a wholly owned subsidiary of Maxim Integrated Products, Inc.

DS2788E+

DS2788E+T&R

Fuel-Gauge Display

Trimming External Voltage-Divider

Only During Voltage Measurement, Conserving

Power

Measurement System

Coulomb Count, Discharge Rate, Temperature,

and Battery Cell Characteristics

Estimation to Nonvolatile (NV) EEPROM

Low-Cost Sense Resistors

PART

LED Display Drivers

-25°C to +70°C

TEMP RANGE

Ordering Information

PIN-PACKAGE

14 TSSOP

Interface

Features

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