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BQ2083-V1P2 Datasheet(PDF) 2 Page - Texas Instruments

Part No. BQ2083-V1P2
Description  SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bp29311
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ2083-V1P2 Datasheet(HTML) 2 Page - Texas Instruments

 
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bq2083-V1P2
SLUS573 − JULY 2003
www.ti.com
2
DESCRIPTION (CONTINUED)
The bq2083−V1P2 uses an integrating converter with
continuous sampling for the measurement of battery
charge and discharge currents. Optimized for coulomb
counting in portable applications, the self-calibrating
integrating converter has a resolution better than 3-nVh
and an offset measurement error of less than 1-
µV
(typical). For voltage and temperature reporting, the
bq2083−V1P2 uses a 16-bit A-to-D converter. In
conjunction with the bq29311, the onboard ADC also
monitors individual cell voltages in a battery pack and
allows the bq2083−V1P2 to generate the control signals
necessary to implement the cell balancing and
the
required safety protection for Li-ion and Li-polymer battery
chemistries.
The bq2083−V1P2 supports the Smart Battery Data
(SBData) commands and charge-control functions. It
communicates data using the System Management Bus
(SMBus) 2-wire protocol. The data available include the
battery’s
remaining
capacity,
temperature,
voltage,
current,
and
remaining
run-time
predictions.
The
bq2083−V1P2 provides LED drivers and a push-button
input to depict remaining battery capacity from full to empty
in 20%, 25%, or 33% increments with a 3-, 4-, or
5-segment display.
The bq2083−V1P2 contains 512 bytes of internal data
flash memory, which store configuration information. The
information includes nominal capacity and voltage,
self-discharge rate, rate compensation factors, and other
programmable cell-modeling factors used to accurately
adjust remaining capacity for use-conditions based on
time, rate, and temperature. The bq2083−V1P2 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 bq29311 AFE protection IC provides power to the
bq2083−V1P2 from a 3 or 4 series Li-ion cell stack,
eliminating the need for an external regulator circuit
.
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VIN
TS
OC
N/C
N/C
SCLK
N/C
VDDD
RBI
SDATA
VSSD
SAFE
N/C
N/C
SMBC
SMBD
DISP
EVENT
VSSD
VSSD
N/C
N/C
CLKOUT
XCK1
XCK2
FILT
VDDA
VSSA
VSSA
SR1
SR2
MRST
N/C
LED1
LED2
LED3
LED4
LED5
TSSOP PACKAGE
(TOP VIEW)
NC − No internal connection
AVAILABLE OPTIONS
TA
PACKAGE
38-PIN TSSOP
(DBT)
−20
°C to 85°C
bq2083DBT−V1P2(1)
(1) The bq2083−V1P2 is available taped and reeled. Insert an R suffix
to the device type (e.g., bq2083DBTR−V1P2) to order tape and reel
version.


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