MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 24

• Manufacturer Part Number: MAX17050EVKIT#
• Description: Power Management IC Development Tools MAX17050 Eval Kit
• Manufacturer: Maxim Integrated
• Type: Voltage Protectionr
• Series: MAX17047, MAX17050r

Specifications of MAX17050EVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX17050
• Input Voltage: 2.5 V to 4.5 V
• Interface Type: I2C
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Part # Aliases: 90-BT07K#D00
• For Use With: MAX17050

The following registers allow operation of the ModelGauge
m3 algorithm to be adjusted for the application. It is recom-
mended that the default values for these registers be used.
The FilterCFG register sets the averaging time period for
all A/D readings, for mixing OCV results and coulomb-
count results. It is recommended that these values are
not changed unless absolutely required by the applica-
tion.
CURR3:CURR0—Sets
AverageCurrent register. The default POR value of 4h gives
a time constant of 11.25 seconds. The equation setting the
period is:
VOLT2:VOLT0—Sets
AverageV
a time constant of 45.0s. The equation setting the period is:
MIX3:MIX0—Sets the time constant for the mixing algo-
rithm. The default POR value of Dh gives a time constant
of 12.8 hours. The equation setting the period is:
Figure 30. FilterCFG Register Format (Input)
Figure 31. RelaxCFG Register Format (Input)
Maxim Integrated
AverageCurrent time constant = 175.8ms O 2
Algorithm Configuration Registers
AverageV
MSb
Figure 30
X
Load
MSb
CELL
6
CELL
X
Load
register. The default POR value of 2h gives
shows the FilterCFG register format:
time constant = 175.8ms O 2
5
TEMP
MSB—ADDRESS 29h
Load
2
MSB—ADDRESS 2Ah
the
4
the
FilterCFG Register (29h)
TEMP
1
Load
time
time
3
TEMP
0
Load
constant
constant
MIX3 MIX2 MIX1
2
Load
(6+VOLT)
(2+CURR)
1
for
for
Load
LSb
ModelGauge m3 Fuel Gauge
the
the
0
LSb
dV4
MSb
MIX0 VOLT2 VOLT1 VOLT0
TEMP2:TEMP0—Sets the time constant for the
AverageTemperature register. The default POR value of
1h gives a time constant of 12min. The equation setting
the period is:
X—Reserved. Do not modify.
The RelaxCFG register defines how the device detects
if the cell is in a relaxed state. See
to be considered relaxed, current flow through the cell
must be kept at a minimum while the change in the cell’s
voltage over time, dV/dt, shows little or no change. If
AverageCurrent remains below the Load threshold while
V
consecutive periods of dt, the cell is considered relaxed.
Figure 31
Load6:Load0—Sets
AverageCurrent register is compared against. The
AverageCurrent register must remain below this thresh-
old value for the cell to be considered unloaded. Load is
an unsigned 7-bit value where 1 LSb = 50FV. The default
value is 800FV.
AvergeTemperature time constant = 175.8ms x 2
CELL
MAX17047/MAX17050
MSb
LOAD
(5.0mAh WHEN R
dV3
changes less than the dV threshold over two
shows the RelaxCFG register format:
Mixing Period = 175.8ms O 2
0
dV2 dV1 dV0
UNITS: 50FV/R
LSB—ADDRESS 29h
LSB—ADDRESS 2Ah
SENSE
the
RelaxCFG Register (2Ah)
SENSE
CURR
= 0.010I)
3
dt3
threshold,
CURR
dt2
Figure
2
(5+MIX)
dt1
CURR
32. For a cell
1
which
LSb
(8 + TEMP)
dt0
LSb
CURR
0
the
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