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BQ2063DBQTIN/a5avaiLi-Ion SBS 1.1 Compliant Gas Gauge With Protector Interface


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BQ2063DBQ
Li-Ion SBS 1.1 Compliant Gas Gauge With Protector Interface
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SLUS468E− MAY 2001 − REVISED APRIL 2002 Provides Accurate Measurement of
Available Charge in Li-Ion Batteries
Supports the 2-Wire SMBus V1.1 Interface
With PEC or Single-Wire HDQ16
Directly Interfaces the Seiko S-8243
Protection IC for Maximum Safety
Protection and Minimal Component Count
Supports Internal or External Thermistor Reports Individual Cell Voltages Uses 15-Bit ADC for Accurate Voltage,
Temperature, and Current Measurements
Measures Charge Flow Using A V-to-F
Converter With Offset of Less Than 16 µV
After Calibration
Consumes Less Than 0.5 mW Operating Drives 4- or 5-Segment LED Display for
Remaining Capacity Indication
28-Pin 150-Mil SSOP
description

The bq2063 SBS-compliant gas gauge IC for battery-pack or in-system installation maintains an accurate
record of available charge in Li-Ion batteries. The bq2063 monitors capacity and other critical parameters in
Li-Ion battery packs. It also directly interfaces the Seiko S-8243 protection IC to minimize component count in
smart-battery circuits.
The bq2063 uses a V-to-F converter with automatic offset correction for charge and discharge counting. For
voltage, temperature, and current reporting, the bq2063 uses an A-to-D converter. In conjunction with the
S-8243, the onboard ADC also monitors individual cell voltages in a Li-Ion battery pack and allows the bq2063
to generate control signals to enhance pack safety.
The bq2063 supports the smart battery data (SBData) commands and charge-control functions. It
communicates data using the system management bus (SMBus) 2-wire protocol or the 1-wire HDQ16 protocol.
The data available include the battery’s remaining capacity, temperature, voltage, current, and remaining
run-time predictions. The bq2063 provides LED drivers and a push-button input to depict remaining battery
capacity from full to empty in 20% or 25% increments with a 4- or 5-segment display.
The bq2063 works with an external EEPROM. The EEPROM stores the configuration information for the
bq2063, such as the battery’s chemistry, self-discharge rate, rate-compensation factors, measurement
calibration, and design voltage and capacity. The bq2063 uses the programmable self-discharge rate and other
compensation factors stored in the EEPROM to accurately adjust remaining capacity for use and standby
conditions based on time, rate, and temperature. The bq2063 also automatically calibrates or learns the true
battery capacity in the course of a discharge cycle from programmable near full to near empty levels.
The S-8243 protection IC may be used to provide power to the bq2063 from a 3- or 4-series Li-Ion cell stack.
AVAILABLE OPTIONS

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.
Not Recommended For New Designs
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