MAX17050EVKIT# Maxim Integrated, MAX17050EVKIT# Datasheet - Page 29

• 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

Detection occurs by monitoring the AIN pin voltage com-
pared to the THRM pin. Whenever a cell is present, the
external resistor-divider network sets the voltage of AIN.
When the cell is removed, the remaining external resistor
pulls AIN to the THRM pin voltage level. Whenever V
< V
present in the application. If V
device determines that no cell is present at that time.
The device is ready to detect a cell insertion if either the
ETHRM or FTHRM bits of the CONFIG register are set
to enable the THRM pin output. See
cell insertion is detected, the fuel gauge is reset and all
fuel-gauge outputs are updated to reflect the SOC of the
Figure 38. Operation After Cell Insertion
Maxim Integrated
THRM
- V
Cell Insertion (IC Already Powered)
DETF
, the device determines that a cell is
REGISTERS
REGISTERS
READINGS
READINGS
OUTPUT
OUTPUT
V BATT
V
BATT
A/D
A/D
AIN
AIN
CELL INSERTION FROM POWERED STATE (FTHRM = 0)
CELL INSERTION FROM POWERED STATE (FTHRM = 1)
AIN
> V
INSERTION
CELL
Figure
THRM
INSERTION
UP TO 1.4s
- V
CELL
38. When a
DETR
UP TO
175ms
, the
INSERTION
INSERTION
ModelGauge m3 Fuel Gauge
AIN
DETECTED
DETECTED
CELL
CELL
270ms
270ms
MEASUREMENTS
MEASUREMENTS
newly inserted cell. This process can take up to 1.845s
(FTHRM = 0) or 620ms (FTHRM = 1) from time of inser-
tion. Note that the device uses the cell voltage as a start-
ing point for the fuel gauge. If the cell voltage is not fully
relaxed at time of insertion, the fuel gauge begins with
some initial error. See the
for details. The host can disable this feature by clearing
the enBi1 bit in the MiscCFG register.
The device can also be configured to alert the host when
cell insertion occurs. When Bei = 1 in the CONFIG reg-
ister, the device generates an interrupt on the ALRT pin
at the start of the first temperature conversion after inser-
tion. This could take up to 1.4s to occur. This feature is
useful if the application uses more than one cell type and
the IC must be reconfigured at each insertion.
COMPLETE
COMPLETE
A/D
A/D
MAX17047/MAX17050
175ms
175ms
SOC VALUES
SOC VALUES
UPDATED
UPDATED
Fuel-Gauge Learning
section
29