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BQ20Z90DBT-V110-BQ20Z90DBT-V110G4
SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech 30-TSSOP -40 to 125
www.ti.com
FEATURES
APPLICATIONS
DESCRIPTION
bq20z90-V110
SLUS743–NOVEMBER 2006
SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™
TECHNOLOGY FOR USE WITH THE bq29330
Improved System Interaction Patented Impedance Track™ Technology •
Optional Pulse Charging Feature for Improved
Accurately Measures Available Chargein Charge Times
Li-Ion and Li-Polymer Batteries •
Drives3-,4-or 5-Segment LED Display for Better than 1% Error Over Lifetimeof the Remaining Capacity Indication
Battery •
Supports SHA-1 Authentication Instant Accuracy– No Learning Cycle •
Lifetime Data Logging
Required •
30-Pin TSSOP (DBT)•
Automatically adjusts for battery aging,
battery self discharge and temperature
inefficiencies •
Notebook PCs Supports the Smart Battery Specification SBS •
Medical and Test Equipment
V1.1 •
Portable Instrumentation•
Works With theTI bq29330 Analog Front-End
(AFE) ProtectionICto Provide Complete Pack
Electronics Solution The bq20z90-V110 SBS-compliant gas gauge IC,•
Full Arrayof Programmable Voltage, Current, incorporating patented Impedance Track™
and Temperature Protection Features technology,is designed for battery-packor in-system
installation. The bq20z90-V110 measures and•
Integrated Time Base Removes Need formaintains an accurate recordof available chargein
External Crystal with Optional Crystal Input Li-ion or Li-polymer batteries using its integrated•
Electronics for 7.2-V, 10.8-Vor 14.4-V Battery high-performance analog peripherals. The
Packs With 50% Fewer External Components bq20z90-V110 monitors capacity change, battery•
Based ona Powerful Low-Power RISC CPU impedance, open-circuit voltage, and other critical
Core With High-Performance Peripherals parameters of the battery pack, and reports the
information to the system host controller overa•
Integrated Field Programmable FLASH serial-communication bus.Itis designedto work with
Memory Eliminates the Need for External the bq29330 analog front-end (AFE) protectionICto
Configuration Memory maximize functionality and safety, and minimize•
Measures Charge Flow Usinga component count and costin smart battery circuits.
High-Resolution, 16-Bit Integrating The Impedance Track technology continuously
Delta-Sigma Converter analyzes the battery impedance, resultingin superior
– Better Than 0.65 nVhof Resolution gas-gauging accuracy. This enables remaining
capacity to be calculated with discharge rate,
– Self-Calibratingtemperature, and cell agingall accounted for during•
Uses 16-Bit Delta-Sigma Converter for each stageof every cycle.
Accurate Voltage and Temperature
Measurements Data Reporting Options For
