BQ2063_15 Datasheet, PDF (10/60 Pages) Texas Instruments – SBS v1.1-COMPLIANT Li-ION GAS-GAUGE IC

bq2063
Not Recommended For New Designs
SBS v1.1ĆCOMPLIANT LiĆION GASĆGAUGE IC
WITH PROTECTOR INTERFACE
SLUS468E− MAY 2001 − REVISED APRIL 2002
end-of-discharge thresholds and capacity correction (continued)
Table 1. State of Charge Based on Low Battery Voltage
THRESHOLD
EDV0
EDV1
EDV2
RELATIVE STATE
OF CHARGE
0%
3%
Battery Low %
The bq2063 uses the EDV thresholds to apply voltage-based corrections to the RM register according to
Table 1. The bq2063 performs EDV-based RM adjustments with Current( ) ≥ C/32. No EDVs are set if current
< C/32. The bq2063 adjusts RM as it detects each threshold. If the voltage threshold is reached before the
corresponding capacity on discharge, the bq2063 reduces RM to the appropriate amount as shown in Table 1.
This reduction occurs only if current ≥ C/32 when the EDV threshold is detected. If RM reaches the capacity
level before the voltage threshold is reached on discharge, the bq2063 prevents RM from decreasing further
until the battery voltage reaches the corresponding threshold only on a full learning cycle discharge. RM is not
held at the associated EDV percentage on a nonlearning discharge cycle (VDQ=0) or if current < C/32.
Table 2. bq2063 Register Functions
FUNCTION
ManufacturerAccess
RemainingCapacityAlarm
RemainingTimeAlarm
BatteryMode
AtRate
AtRateTimeToFull
AtRateTimeToEmpty
AtRateOK
Temperature
Voltage
Current
AverageCurrent
MaxError
RelativeStateOfCharge
AbsoluteStateOfCharge
RemainingCapacity
FullChargeCapacity
RunTimeToEmpty
AverageTimeToEmpty
AverageTimeToFull
ChargingCurrent
ChargingVoltage
Battery Status
CycleCount
DesignCapacity
DesignVoltage
SpecificationInfo
ManufactureDate
COMMAND CODE
SMBus
HDQ16
0x00
0x00
0x01
0x01
0x02
0x02
0x03
0x03
0x04
0x04
0x05
0x05
0x06
0x06
0x07
0x07
0x08
0x08
0x09
0x09
0x0a
0x0a
0x0b
0x0b
0x0c
0x0c
0x0d
0x0d
0x0e
0x0e
0x0f
0x0f
0x10
0x10
0x11
0x11
0x12
0x12
0x13
0x13
0x14
0x14
0x15
0x15
0x16
0x16
0x17
0x17
0x18
0x18
0x19
0x19
0x1a
0x1a
0x1b
0x1b
ACCESS
(SMBus)
read/write
read/write
read/write
read/write
read/write
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
read
UNITS
NA
mAh, 10 mWh
minutes
NA
mA, 10mW
minutes
minutes
Boolean
0.1°K
mV
mA
mA
percent
percent
percent
mAh, 10 mWh
mAh, 10 mWh
minutes
minutes
minutes
mA
mV
NA
cycles
mAh, 10 mWh
mV
NA
NA
10
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