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BQ20Z80DBTR-V102 |BQ20Z80DBTRV102TI/BBN/a10avaiSBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track Tech 38-TSSOP -40 to 85


BQ20Z80DBTR-V102 ,SBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track Tech 38-TSSOP -40 to 85SLUS681B–NOVEMBER 2005–REVISED JANUARY 2007TERMINAL FUNCTIONSTERMINAL(1)I/O DESCRIPTIONNO. NAME1 VI ..
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BQ20Z80DBTR-V102
SBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track Tech 38-TSSOP -40 to 85
www.ti.com
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 Chargein
Li-Ion and Li-Polymer Batteries
Better than 1% Error Over Lifetimeof the
Battery
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 theTI bq29312A Analog technology,is designed for battery-packor in-systemFront-End (AFE) ProtectionICto Provide installation. The bq20z80 measures and maintainsComplete Pack Electronics Solution an accurate recordof available chargein Li-ionor• Full Arrayof Programmable Voltage, Current, Li-polymer batteries using its integratedand 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 parametersofExternal Crystal with Optional Crystal Input
the battery pack, and reports the informationto the• Electronics for 7.2-V, 10.8-Vor 14.4-V Battery system host controller overa serial-communicationPacks With Few External Components bus.Itis designedto work with the bq29312A analog• Based ona 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 costin smart battery circuits.• Integrated Field Programmable FLASH
Memory Eliminates the Need for External
The Impedance Track technology continuously
Configuration Memory
analyzes the battery impedance, resultingin superior
gas-gauging accuracy. This enables remaining• Measures Charge Flow Usinga capacity to be calculated with discharge rate,High-Resolution, 16-Bit Integrating temperature, and cell agingall accounted for duringDelta-Sigma Converter each stageof every cycle.– Better Than 0.65 nVhof Resolution Self-Calibrating AVAILABLE OPTIONS Offset Error Less Than1 μV PACKAGE Uses 16-Bit Delta-Sigma Converter for 38-PIN TSSOP (DBT) 38-PIN TSSOP (DBT)
Tube Tape and ReelAccurate Voltage and Temperature

–40°CtoMeasurements bq20z80DBT-V102(1) bq20z80DBTR-V102(2)85°C• Extensive Data Reporting Options For
Improved System Interaction Pulse Charging Feature for Improved Times
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