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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.

bq34110

SLUSCI1A – AUGUST 2016 – REVISED SEPTEMBER 2016

bq34110 Multi-Chemistry CEDV Battery Gas Gauge for Rarely Discharged Applications

1

1 Features

1

•

Accurate End-Of-Service (EOS) Determination for

Batteries in Rarely Discharged Applications

•

Compensated End-of-Discharge Voltage (CEDV)

Gas Gauge for Single- and Multi-Cell Batteries,

Providing

–

State-Of-Charge (SOC)

–

Time-To-Empty (TTE)

–

State-Of-Health (SOH)

–

Watt-Hour–Based Charge Termination

•

Supports Voltages up to 65 V, Capacities up to

32 Ah, and Currents up to 32 A—with Options to

Extend Beyond These Levels Using Scaling

•

Supports Li-Ion, LiFePO4, Lead-Acid (PbA),

NiMH, and NiCd Chemistries

•

Dual Configurable Host Interrupt or GPO

•

Lifetime Data Logging Options

•

Precision Coulomb Counter, Voltage, and

Temperature Measurement

•

Power Enable Control

•

•

Accumulated Charge Coulomb Counting with

Configurable Interrupt

•

SHA-1 Authentication

2 Applications

•

UPS Backup Systems

•

Telematics Backup Systems

•

Emergency Battery Power Modules

•

Energy Storage Systems

•

Asset Tracking

•

Building Security Systems

•

Video Surveillance

•

Electronic Smart Locks

•

Remote and Emergency Lighting

•

Server Power Systems

•

Robotics

•

Toys

3 Description

The bq34110 CEDV Battery Gas Gauge provides

CEDV

gas

gauging

and

End-Of-Service

(EOS)

Determination for single- and multi-cell batteries. The

device

includes

enhanced

features

to

support

applications where the battery is kept fully charged

and is rarely discharged, such as found in a wide

variety of backup systems. The bq34110 gas gauge

supports multiple battery chemistries, including Li-Ion

and LiFePO4, lead acid (PbA), Nickel Metal Hydride

(NiMH), and Nickel Cadmium (NiCd).

The gas gauging function uses voltage, current, and

temperature

data

with

Compensated

End-of-

Discharge Voltage (CEDV) technology to provide

State-Of-Charge (SOC) and State-Of-Health (SOH)

data. The gas gauge also incorporates an End-Of-

Service (EOS) Determination function that alerts

when

battery

capability

has

degraded

and

is

approaching the conclusion of its usable service.

The data available from the gauge can be read by the

are also available to interrupt the host or can be used

for other functions, based on a variety of configurable

options.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

bq34110

TSSOP (14)

5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic