BQ2083-V1P3 Datasheet, PDF (47/56 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

www.ti.com
bq2083-V1P3
SLVS508 − OCTOBER 2003
Fast Charge Termination Percentage
The bq2083−V1P3 sets RM to a percentage of FCC on charge termination if the CSYNC bit is set in the gauge
configuration register. The percentage of FCC, FCT%, is stored in Fast Charge Termination % in DF 0x46. The
value is stored as shown:
Fast Charge Termination% = (FCT% _* 2.56−1)
Cycle Count Initialization
Cycle Count DF 0x0c-0x0d stores the initial value for the CycleCount( ) function. It should be programmed to
0x0000.
Cycle Count Threshold
Cycle Count Threshold 0x37−0x38 sets the number of mAh that must be removed from the battery to increment
CycleCount( ). Cycle Count threshold is a 16-bit value stored in mAh.
Current Taper Termination Characteristics
Two factors in the data flash set the current taper termination for Li-Ion battery packs. The two locations are Current
Taper Qual Voltage DF 0x4a and Current Taper Threshold DF 0x48−0x49. Current taper termination occurs during
charging when the pack voltage is above or equal to the charging voltage minus the qualification voltage, and the
charging current is below the taper threshold for at least 40 seconds. Current Taper Qual Voltage DF 0x4a is stored
in mV and Current Taper Threshold DF 0x48−0x49 in mA.
Cell Balancing
Four constants set the cell balancing parameters. Cell Balance Threshold DF 0xd9−0xda sets the minimum
voltage in mV that each cell must achieve to initiate cell balancing. Cell Balance Window DF 0xd9−0xda sets in
mV the amount that the cell balance threshold can increase. Cell Balance Min DF 0xdb sets in mV the cell
differential that must exist to initiate cell balancing and Cell Balance Interval DF 0xdc sets the cell balancing time
interval in seconds. Programming Cell Balance Threshold to 65,535 disables cell balancing.
Pack Options
Pack Configuration
Pack Configuration DF 0x28 contains bit-programmable features.
b7
b6
b5
b4
b3
b2
b1
b0
DMODE
LED1
LED0
HPE
CPE
SM
CC1
CC0
DMODE
The DMODE bit determines whether the LED outputs indicate AbsoluteStateOfCharge( ) or
RelativeStateOfCharge( ).
0 LEDs reflect AbsoluteStateOfCharge( )
1 LEDs reflect RelativeStateOfCharge( )
LED1−LED0
The LED bits set the number of LEDs for Remaining Capacity ( ) indication.
0−1 Configures the bq2083−V1P3 for three LEDs
1−0 Configures the bq2083−V1P3 for four LEDs
1−1 or 0−0 Configures the bq2083−V1P3 for five LEDs
HPE
The hpe bit enables/disables PEC transmissions to the smart battery host for master mode alarm messages.
0 No PEC byte on alarm warning to host
1 PEC byte on alarm warning to host
47