MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 28

• 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

Figure 37. Power-Up Operation
The device is designed to operate outside the battery
pack and can therefore be exposed to power loss when
in the application. To prevent the loss of learned informa-
tion during power cycles, a save-and-restore procedure
can be used to maintain register values in nonvolatile
memory external to the device. The registers
must be stored externally and then rewritten to the device
after power-up to maintain a learned state of operation.
Note that some registers are application outputs, some
registers are for internal calculations, and some are
characterization setup registers. Registers that are not
internal are described in their own sections. These values
should be stored by the application at periodic intervals.
Some recommended back-up events are:
• End-of-charge
• End-of-discharge
• Prior to application entering shutdown state
The host is responsible for loading the default character-
ization data at first power-up of the device, and restoring
the default characterization data plus learned information
on subsequent power-up events.
Maxim Integrated
REGISTERS
INSERTION
READINGS
OUTPUT
V
CELL
BATT
A/D
AIN
Save and Restore Registers
V
BATT
270ms
> V
DDMIN
MEASUREMENTS
COMPLETE
A/D
(Table
ModelGauge m3 Fuel Gauge
2)
175ms
SOC VALUES
UPDATED
The device detects when a cell has been removed or
inserted into the application. This allows the device to
adjust to the new cell to maintain accuracy. The removal-
detection feature also allows the device to quickly warn the
host processor through interrupt of impending power loss
if enabled.
Table 2. Save and Restore Registers
MAX17047/MAX17050
1.4s UNTIL NEXT TEMPERATURE READING
Battery Removal and Insertion
QResidual 00
QResidual 10
QResidual 20
QResidual 30
REGISTER
RCOMP0
TempCo
FullCap
Cycles
dQacc
dPacc
ADDRESS
10h
17h
38h
39h
12h
22h
32h
42h
45h
46h
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