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SBSĆCOMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311
bq2085-V1P3
SLUS598 − FEBRUARY 2004
FEATURES
D Provide...
www.ti.com
SBSĆCOMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311
bq2085-V1P3
SLUS598 − FEBRUARY 2004
FEATURES
D Provides Accurate Measurement of Available
Charge in Li-Ion and Li-Polymer Batteries
D Supports the Smart Battery Specification
(SBS) V1.1
D Integrated Time Base Removes Need for
External Crystal
D Works With the TI bq29311 Analog Front-End
(AFE) Protection IC to Provide Complete Pack Electronics for 10.8-V or 14.4-V Battery Packs With Few External Components
D Based on a Powerful Low-Power RISC CPU
Core With High-Performance Peripherals
D Integrated Flash Memory Eliminates the Need
for External Configuration EEPROM
D Measures Charge Flow Using a High
Resolution 16-Bit Integrating Converter
− Better Than 3-nVh of Resolution
− Self-Calibrating
− Offset Error Less Than 1 µV
D Uses 16-Bit Delta Sigma Converter for
Accurate
Voltage and Temperature Measurements
D Programmable Cell Modeling for Maximum
Battery Fuel Gauge Accuracy
BLOCK DIAGRAM
D Drives 3-, 4-, or 5-Segment LED Display for
Remaining Capacity Indication
D 38-Pin TSSOP (DBT)
APPLICATIONS
D Notebook PCs D Medical and Test Equipment D Portable Instrumentation
DESCRIPTION
The bq2085−V1P3 SBS-compliant gas gauge IC for battery pack or in-system installation maintains an accurate record of available charge in Li-ion or Li-polymer batteries. The bq2085−V1P3 monitors capacity and other critical parameters of the battery pack and reports the information to the system host controller over a serial communication bus...