BQ2083-V1P3 Datasheet, PDF (17/56 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

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bq2083-V1P3
SLVS508 − OCTOBER 2003
The DMODE bit in Pack Configuration DF 0x28 programs the bq2083−V1P3 for the absolute or relative display mode.
The LED bits program the 3-, 4-, or 5-LED option.
Activation
The display may be activated at any time by a high-to-low transition on the DISP input. This is usually accomplished
with a pullup resistor and a pushbutton switch. Detection of the transition activates the display and starts a four
second display timer. Reactivation of the display requires that the DISP input return to a logic-high state and then
transition low again. The second high-to-low transition can be detected only after the display timer expires. If unused,
the DISP input must be pulled up to V_CC.
If the EDV0 bit is set, the bq2083−V1P3 disables the LED display.
Display Modes
In relative mode, each LED output represents 20%, 25%, or 33% of the RelativeStateOfCharge( ) value. In absolute
mode, each LED output represents 20%, 25% or 33% of the AbsoluteStateOfCharge( ) value. Table 7 shows the
display options for 5 LEDs Table 8 for 4 LEDs, and Table 9 for 3 LEDs.
In either mode, the bq2083−V1P3 blinks the LED display if RemainingCapacity( ) is less than Remaining
CapacityAlarm( ). The display is disabled if EDV0 = 1.
Table 7. Display Mode for Five LEDs
CONDITION
RELATIVE OR ABSOLUTE
StateOfCharge( )
EDV0 = 1
<20%
≥20%, < 40%
≥40%, < 60%
≥60%, < 80%
≥80%
FIVE-LED DISPLAY OPTION
LED1
OFF
ON
ON
ON
ON
ON
LED2
OFF
OFF
ON
ON
ON
ON
LED3
OFF
OFF
OFF
ON
ON
ON
LED4
OFF
OFF
OFF
OFF
ON
ON
LED5
OFF
OFF
OFF
OFF
OFF
ON
Table 8. Display Mode for Four LEDs
CONDITION
RELATIVE OR ABSOLUTE
StateOfCharge( )
EDV0 = 1
<25%
≥25%, < 50%
≥50%, < 75%
≥75%
FOUR-LED DISPLAY OPTION
LED1
OFF
ON
ON
ON
ON
LED2
OFF
OFF
ON
ON
ON
LED3
OFF
OFF
OFF
ON
ON
LED4
OFF
OFF
OFF
OFF
ON
Table 9. Display Mode for Three LEDs
CONDITION
RELATIVE OR ABSOLUTE
StateOfCharge( )
EDV0 = 1
<34%
≥34%, < 67%
≥67%
THREE-LED DISPLAY OPTION
LED1
OFF
ON
ON
ON
LED2
OFF
OFF
ON
ON
LED3
OFF
OFF
OFF
ON
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