bq20z95

www.ti.com

SLUS757C – JULY 2007 – REVISED OCTOBER 2013

SBS 1.1-COMPLIANT GAS GAUGE and PROTECTION ENABLED WITH IMPEDANCE

TRACK™

Check for Samples: bq20z95

1

FEATURES

DESCRIPTION

2

•

Next Generation Patented Impedance Track™

The

bq20z95

SBS-compliant

gas

gauge

and

Technology Accurately Measures Available

protection IC is a single IC solution designed for

Charge in Li-Ion and Li-Polymer Batteries

battery-pack or in-system installation. The bq20z95

–

Better Than 1% Error Over Lifetime of the

measures and maintains an accurate record of

Battery

available charge in Li-Ion or Li-Polymer batteries

using

its

integrated

high-performance

analog

•

Supports the Smart Battery Specification

peripherals,

monitors

capacity

change,

battery

SBS V1.1

impedance, open-circuit voltage, and other critical

•

Flexible Configuration for 2-Series to 4-Series

parameters of the battery pack as well and reports

Li-Ion and Li-Polymer Cells

the information to the system host controller over a

•

Powerful 8-Bit RISC CPU With Ultra-Low

serial-communication

bus.

Together

with

the

Power Modes

integrated analog front-end (AFE) short-circuit and

overload

protection,

the

bq20z95

maximizes

•

Full Array of Programmable Protection

functionality and safety while minimizing external

Features

component count, cost, and size in smart battery

–

Voltage, Current, and Temperature

circuits.

•

Supports SHA-1 Authentication

The implemented Impedance Track™ gas gauging

•

Complete Battery Protection and Gas Gauge

technology

continuously

analyzes

the

battery

Solution in One Package

impedance,

resulting

in

superior

gas-gauging

accuracy. This enables remaining capacity to be

•

Small 44-Pin TSSOP (DBT) Package

calculated with discharge rate, temperature, and cell

aging all accounted for during each stage of every

APPLICATIONS

cycle with high accuracy.

•

Notebook PCs

•

Medical and Test Equipment

•

Portable Instrumentation

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 50 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 © 2007–2013, 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.