MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 37

• 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 MaxMinV
minimum V
reset or until reset by the host software. Each time the
V
values. If V
the minimum, the corresponding value is replaced with
the new reading. At power-up, the MaxV
to 00h (the minimum) and the MinV
FFh (the maximum). Therefore, both values are changed
to the V
software can reset this register by writing it to its power-
up value of 00FFh. The maximum and minimum voltages
are each stored as 8-bit values with a 20mV resolution.
Figure 51
While in active mode, the device periodically measures
the voltage between the CSN and CSP pins over a
Q51.2mV range. The resulting data is stored as a signed
two’s-complement value in the Current register every
175.8ms with an LSb value of 1.5625FV/R
Table 3. Sample Current Register Conversions
Maxim Integrated
Figure 51. MaxMinV
CELL
range and accuracy
Adjusting CGAIN to
keep units constant
Adjusting sense
resistor to meet
requirements
MAX
MSb
FUNCTION
register updates, it is compared against these
CELL
7
shows the MaxMinV
CELL
CELL
MAX
register reading after the first update. Host
CELL
6
register values since the last fuel-gauge
is larger than the maximum or less than
CELL
MAX
register maintains the maximum and
MaxMinV
MSB—ADDRESS 1Bh
Current Measurement
RESISTOR (I)
Register Format (Output)
5
MAX
SENSE
0.005
0.010
0.020
0.005
0.010
0.020
CELL
4
CELL
MAX
register format.
CELL
3
Register (1Bh)
MAX
REGISTER
CELL
CGAIN
value is set to
4000h
4000h
4000h
7FFFh
4000h
2000h
2
value is set
SENSE
MAX
1
. All
ModelGauge m3 Fuel Gauge
MAX
LSb
CURRENT REGISTER
RESOLUTION (µA)
0
312.50
156.25
78.125
156.25
156.25
156.25
devices are calibrated for current-measurement accu-
racy at the factory. However, if the application requires,
Current Register readings can be adjusted by changing
the COFF and CGAIN register settings.
Additionally, the device maintains a record of the mini-
mum and maximum current measured by the device,
and an average current over a time period defined by
the host. Contents of the Current and AverageCurrent
registers are 0000h until the first conversion cycle time
period after IC power-up. The last values of the Current
and AverageCurrent registers are maintained when the
IC enters shutdown mode.
While in active mode, the device periodically measures the
voltage between the CSN and CSP pins over a Q51.2mV
range. The resulting data is stored as a two’s-complement
value in the Current register every 175.8ms with an LSb value
of 1.5625FV/R
maximum register values are reported as the minimum or
maximum value.
and
MIN
MSb
UNITS: 20mV
Table 3
MAX17047/MAX17050
7
MIN
shows the Sample Current register conversions.
6
SENSE
MIN
Figure 52
CURRENT REGISTER
LSB—ADDRESS 1Bh
5
. Voltages outside the minimum and
RANGE (A)
MIN
Q10.24
Q5.12
Q2.56
Q5.12
Q5.12
Q5.12
shows the Current register format
4
Current Register (0Ah)
MIN
3
MIN
2
MAXIMUM CELL
CAPACITY (Ah)
MIN
1
32.768
16.384
16.384
16.384
16.384
8.192
MIN
LSb
0
37