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BQ20Z80-V102 Datasheet(PDF) 1 Page - Texas Instruments

Part No. BQ20Z80-V102
Description  SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK TM TECHNOLOGY FOR USE WITH THE BQ29312A
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ20Z80-V102 Datasheet(HTML) 1 Page - Texas Instruments

 
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FEATURES
APPLICATIONS
DESCRIPTION
bq20z80-V102
SLUS681B – NOVEMBER 2005 – REVISED JANUARY 2007
SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™
TECHNOLOGY FOR USE WITH THE bq29312A
• Lifetime Data Logging
• Patented Impedance Track™ Technology
• 38-Pin TSSOP (DBT)
Accurately Measures Available Charge in
Li-Ion and Li-Polymer Batteries
• Notebook PCs
• Better than 1% Error Over Lifetime of the
Battery
• Medical and Test Equipment
• Portable Instrumentation
• Instant Accuracy – No Learning Cycle
Required
• Supports the Smart Battery Specification SBS
V1.1
The
bq20z80
SBS-compliant
gas
gauge
IC,
incorporating
patented
Impedance
Track™
• Works With the TI bq29312A Analog
technology, is designed for battery-pack or in-system
Front-End (AFE) Protection IC to Provide
installation. The bq20z80 measures and maintains
Complete Pack Electronics Solution
an accurate record of available charge in Li-ion or
• Full Array of Programmable Voltage, Current,
Li-polymer
batteries
using
its
integrated
and Temperature Protection Features
high-performance analog peripherals. The bq20z80
monitors
capacity
change,
battery
impedance,
• Integrated Time Base Removes Need for
open-circuit voltage, and other critical parameters of
External Crystal with Optional Crystal Input
the battery pack, and reports the information to the
• Electronics for 7.2-V, 10.8-V or 14.4-V Battery
system host controller over a serial-communication
Packs With Few External Components
bus. It is designed to work with the bq29312A analog
• Based on a Powerful Low-Power RISC CPU
front-end
(AFE)
protection
IC
to
maximize
Core With High-Performance Peripherals
functionality and safety, and minimize component
count and cost in smart battery circuits.
• Integrated Field Programmable FLASH
Memory Eliminates the Need for External
The
Impedance
Track
technology
continuously
Configuration Memory
analyzes the battery impedance, resulting in superior
gas-gauging
accuracy.
This
enables
remaining
• Measures Charge Flow Using a
capacity to be calculated with discharge rate,
High-Resolution, 16-Bit Integrating
temperature, and cell aging all accounted for during
Delta-Sigma Converter
each stage of every cycle.
Better Than 0.65 nVh of Resolution
Self-Calibrating
AVAILABLE OPTIONS
Offset Error Less Than 1
µV
PACKAGE
TA
• Uses 16-Bit Delta-Sigma Converter for
38-PIN TSSOP (DBT)
38-PIN TSSOP (DBT)
Tube
Tape and Reel
Accurate Voltage and Temperature
–40
°C to
Measurements
bq20z80DBT-V102(1)
bq20z80DBTR-V102(2)
85
°C
• Extensive Data Reporting Options For
Improved System Interaction
• Optional Pulse Charging Feature for Improved
Charge Times
• Drives 3-, 4- or 5-Segment LED Display for
Remaining Capacity Indication
(1)
A single tube quantity is 50 units.
• Supports SHA-1 Authentication
(2)
A single reel quantity is 2000 units
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.
Impedance Track is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2007, 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.


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