bq20z65-R1

www.ti.com

SLUS990 – DECEMBER 2009

SBS 1.1-COMPLIANT GAS GAUGE AND PROTECTION

ENABLED WITH IMPEDANCE TRACK™

Check for Samples: bq20z65-R1

1

FEATURES

APPLICATIONS

•

Notebook PCs

2

•

Next Generation Patented Impedance Track™

Technology Accurately Measures Available

•

Medical and Test Equipment

Charge in Li-Ion and Li-Polymer Batteries

•

Portable Instrumentation

–

Better Than 1% Error Over the Lifetime of

DESCRIPTION

the Battery

•

Supports the Smart Battery Specification

The bq20z65-R1 SBS-compliant gas gauge and

SBS V1.1

protection IC, incorporating patented Impedance

Track™ technology, is a single IC solution designed

•

Flexible Configuration for 2 to 4 Series Li-Ion

for

battery-pack

or

in-system

installation.

The

and Li-Polymer Cells

bq20z65-R1 measures and maintains an accurate

•

Powerful 8-Bit RISC CPU With Ultralow Power

record of available charge in Li-ion or Li-polymer

Modes

batteries

using

its

integrated

high-performance

analog

peripherals.

The

bq20z65-R1

monitors

•

Full Array of Programmable Protection

capacity change, battery impedance, open-circuit

Features

voltage, and other critical parameters of the battery

–

Voltage, Current, and Temperature

pack which reports the information to the system host

•

Satisfies JEITA Guidelines

controller over a serial-communication bus. Together

with

the

integrated

analog

front-end

(AFE)

•

Added Flexibility to Handle More Complex

short-circuit and overload protection, the bq20z65-R1

Charging Profiles

maximizes functionality and safety while minimizing

•

Lifetime Data Logging

external component count, cost, and size in smart

•

Drives 3, 4, and 5 Segment LED Display for

battery circuits.

Battery-Pack Conditions

The implemented Impedance Track™ gas gauging

•

Supports SHA-1 Authentication

technology

continuously

analyzes

the

battery

•

Complete Battery Protection and Gas Gauge

impedance,

resulting

in

superior

gas-gauging

Solution in One Package

accuracy. This enables remaining capacity to be

calculated with discharge rate, temperature, and cell

•

Available in a 44-Pin TSSOP (DBT) package

aging all accounted for during each stage of every

cycle with high accuracy.

Table 1. AVAILABLE OPTIONS

44-PIN TSSOP (DBT) Tube

44-PIN TSSOP (DBT) Tape and Reel

–40°C to 85°C

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

(2)

A single tube quantity is 40 units.

(3)

A single reel quantity is 2000 units

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

Impedance Track is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.