MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 18

• 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

Alternatively, the TTE register can be used to estimate time
to empty for any given current load. Whenever the AtRate
register is programmed to a negative number, representing
a discharge current, the TTE register displays the estimated
time to empty for the application based on the AtRate regis-
ter value.
The Age register contains a calculated percentage value
of the application’s present cell capacity compared to its
expected capacity. The result can be used by the host to
gauge the cell’s health as compared to a new cell of the
same type. The result is displayed as a percentage value
from 0 to 256% with a 0.0039% LSb.
Age register format. The equation for the register output is:
Figure 17. TTE Register Format (Output)
Figure 18. Age Register Format (Output)
Figure 19. Cycles Register Format (Output)
Maxim Integrated
Age Register = 100% O (FullCAP Register/
MSb
MSb
MSb
2
2
2
10
15
Figure 17
7
2
2
2
14
9
6
DesignCap Register)
shows the TTE register format.
2
2
2
MSB—ADDRESS 11h
MSB—ADDRESS 07h
MSB—ADDRESS 17h
13
8
5
2
2
2
12
7
4
Age Register (07h)
2
2
2
11
6
3
Figure 18
2
2
2
10
5
2
2
2
2
shows the
4
1
9
LSb
LSb
LSb
2
2
2
3
0
8
ModelGauge m3 Fuel Gauge
The Cycles register accumulates total percent change in
the cell during both charging and discharging. The result
is stored as a total count of full charge/discharge cycles.
For example, a full charge/discharge cycle results in
the Cycles register incrementing by 100%. The Cycles
register has a full range of 0 to 65535% with a 1% LSb.
This register is reset to 0% at power-up. To maintain the
lifetime cycle count of the cell, this register must be peri-
odically saved by the host and rewritten to the device at
power-up. See the
for details. See
The VFOCV register contains the raw open-circuit volt-
age output of the voltage fuel gauge. This value is used
in other internal calculations and can be read for debug
purposes. The result is a 12-bit value ranging from 2.5V
to 5.119V where 1 LSb is 1.25mV. The bottom 4 bits of
this register are don’t care bits. See
VFOCV register format.
MSb
2
MSb
2
2
MSb
2
2
0
0
-8
0
2
2
-1
2
7
UNITS: 3.0min
UNITS: 1.0%
UNITS: 1.0%
UNITS: 0.0039%
MAX17047/MAX17050
2
2
2
-2
1
6
2
2
2
Figure 19
LSB—ADDRESS 11h
LSB—ADDRESS 07h
LSB—ADDRESS 17h
-3
0
5
Save and Restore Registers
2
2
2
-1
-4
4
for the Cycles register format.
2
2
2
VFOCV Register (FBh)
-2
-5
3
Cycles Register (17h)
2
2
2
-3
-6
2
Figure 20
2
2
2
-4
-7
1
LSb
LSb
LSb
2
2
2
-5
-8
0
section
for the
18