C0098C0113C0050C0048C0056C0051C0045C0086C0049C0080C0050
SLUS573 − JULY 2003
C0083C0066C0083C0262C0067C0079C0077C0080C0076C0073C0065C0078C0084 C0071C0065C0083 C0071C0065C0085C0071C0069 C0073C0067
C0070C0079C0082 C0085C0083C0069 C0087C0073C0084C0072 C0084C0072C0069 C0098C0113C0050C0057C0051C0049C0049

FEATURES
C0068 Provides Accurate Measurement of Available
Charge in Li-Ion and Li-Polymer Batteries
C0068 Supports the Smart Battery Specification
(SBS) V1.1
C0068 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
C0068 Based on a Powerful Low-Power RISC CPU
Core With High-Performance Peripherals
C0068 Integrated Flash Memory Eliminates the Need
for External Configuration EEPROM
C0068 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
C0068 Uses 16-Bit Delta Sigma Converter for
Accurate Voltage and Temperature
Measurements
C0068 Programmable Cell Modeling for Maximum
Battery Fuel Gauge Accuracy
C0068 Drives 3-, 4-, or 5-Segment LED Display for
Remaining Capacity Indication
C0068 38-Pin TSSOP (DBT)
APPLICATIONS
C0068 Notebook PCs
C0068 Medical and Test Equipment
C0068 Portable Instrumentation

DESCRIPTION
The bq2083−V1P2 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 bq2083−V1P2 monitors capacity and other
critical parameters of the battery pack and reports the
information to the system host controller over a serial
communication bus. It is designed to work with the
bq29311 analog front-end (AFE) protection IC to maximize
functionality and safety and minimize component count
and cost in smart battery circuits. Using information from
the bq2083−V1P2, the host controller can manage
remaining battery power to extend the system run time as
much as possible.
BLOCK DIAGRAM
ADC
Voltage
Sense
Resistor
(10 mΩ - 20 mΩ)
Pack−
Integrating
ADC
Coulomb
Counting
Temp
Sensor
512 Bytes
Config.
Flash
EPROM
bq2083−V1P2
Level
Translator
bq29311
LDO
Glueless
Interface
Cell Inputs
Safety Control
SMBus
Pack+
Supply Voltage
Li-Ion
Cells
−
+
Charge/Discharge
Power FETs
−
+
−
+
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.
www.ti.com
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