MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 40

• 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

When Tex = 1 in the CONFIG register, the device does
not update the Temperature register based on results
from the AIN pin A/D. Instead, host software must peri-
odically write the Temperature register with the known
application temperature to keep the fuel gauge accurate.
While in active mode and Ten = 1 in the CONFIG register,
the device periodically measures the voltage between
pins AIN and CSP and compares the result to the voltage
of the THRM pin. The device stores the result, a ratiomet-
ric value from 0 to 100%. The resulting data is placed
in the AIN register every 1.4s with an LSb of 0.0122%.
Contents of the AIN register are indeterminate for the
first conversion cycle time period after device power-up.
The last value of the AIN register is maintained when the
device enters shutdown mode or if Ten = 0 in the CONFIG
register.
While in active mode and Tex = 0 and Ten = 1 in the
CONFIG register, the device converts the AIN regis-
ter value into a signed two’s-complement temperature
Figure 57. AIN Register Format (Output)
Figure 58. Temperature Register Format (Input/Output)
Figure 59. AverageTemperature Register Format (Output)
Maxim Integrated
MSb
MSb
MSb
2
Figure 57
S
S
-1
2
2
2
-2
6
6
shows the AIN register format.
2
2
2
MSB—ADDRESS 27h
MSB—ADDRESS 08h
MSB—ADDRESS 16h
Temperature Register (08h)
-3
5
5
2
2
2
-4
4
4
AIN Register (27h)
2
2
2
-5
3
3
2
2
2
-6
2
2
2
2
2
-7
1
1
LSb
LSb
LSb
2
2
2
-8
0
0
ModelGauge m3 Fuel Gauge
value. See the TGAIN and TOFF configuration registers.
The resulting data is placed in the Temperature register
every 1.4s with a resolution of +0.0039NC. If an 8-bit
temperature reading is desired, the host can read only
the upper byte of the Temperature register with a resolu-
tion of +1.0NC. Contents of the Temperature register are
indeterminate for the first conversion cycle time period
after device power-up. The last value of the Temperature
register is maintained when the device enters shutdown
mode.
The AverageTemperature register reports an average
of temperature register readings over a configurable
6min to 12h time period. See the FilterCFG register (29h)
description for details on setting the time filter. The result-
ing average is placed in the AverageTemperature regis-
ter with an LSb value of 0.0039NC. The first Temperature
register reading after device power-up sets the starting
point of the AverageTemperature filter. The last value of
the AverageTemperature register is maintained when
the device enters shutdown mode.
AverageTemperature register format.
MSb
2
MSb
2
2
MSb
2
2
2
2
2
-13
-8
0
-8
0
-9
-1
-1
UNITS: +1.0NC
UNITS: +1.0NC
UNITS: +0.0039NC
UNITS: +0.0039NC
UNITS: 0.0122%
MAX17047/MAX17050
Figure 58
2
2
2
-10
-2
-2
AverageTemperature Register (16h)
2
2
2
-11
LSB—ADDRESS 27h
LSB—ADDRESS 08h
LSB—ADDRESS 16h
-3
-3
shows the Temperature register format.
2
2
2
-12
-4
-4
2
2
2
-13
-5
-5
2
2
X
-6
-6
Figure 59
2
2
X
-7
-7
LSb
LSb
LSb
2
2
shows the
X
-8
-8
40