BQ2083-V1P3 Datasheet, PDF (2/56 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

bq2083-V1P3
SLVS508 − OCTOBER 2003
DESCRIPTION (CONTINUED)
The bq2083−V1P3 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−V1P3 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−V1P3 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−V1P3 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−V1P3 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−V1P3 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−V1P3 also
automatically calibrates or learns the true battery capacity
in the course of a discharge cycle from programmable near
full to near empty levels.
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The bq29311 AFE protection IC provides power to the
bq2083−V1P3 from a 3 or 4 series Li-ion cell stack,
eliminating the need for an external regulator circuit.
TSSOP PACKAGE
(TOP VIEW)
VIN ₁
TS ₂
OC ₃
N/C ₄
N/C ₅
SCLK ₆
N/C 7
VDDD 8
RBI 9
SDATA 10
VSSD 11
SAFE 12
N/C 13
N/C 14
SMBC 15
SMBD 16
DISP 17
EVENT 18
VSSD 19
38 ^VSSD
37 ^N/C
36 ^N/C
35 ^CLKOUT
34 ^XCK1
33 ^XCK2
32 ^FILT
31 ^VDDA
30 ^VSSA
29 ^VSSA
28 ^SR1
27 ^SR2
26 ^MRST
25 N/C
24 LED1
23 LED2
22 LED3
21 LED4
20 LED5
NC − No internal connection
AVAILABLE OPTIONS
PACKAGE
TA
38-PIN TSSOP
(DBT)
−20°C to 85°C
bq2083DBT−V1P3(1)
(1) _{The bq2083−V1P3 is available taped and reeled. Insert an R suffix}
to the device type (e.g., bq2083DBTR−V1P3) to order tape and reel
version.
2