DS2786K Maxim Integrated, DS2786K Datasheet - Page 6

• Manufacturer Part Number: DS2786K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2786r

DS2786EVKIT
is started. The user can manually enter the Sense Resistor Value at the top of the window, or can allow the
software to calculate the value. To allow the DS2786 EV kit to calculate the sense resistor, simply enter the value
of the current that is flowing across the sense resistor in the Current Forced text box in terms of mAmps. Then left-
click the Calculate Resistor button and the software will determine the value of the sense resistor and put the new
value in the Sense Resistor Value text box at the top of the window. Click OK to accept the new Sense Resistor
Value, or Click Cancel to ignore the changes that were made.
UPDATE REFERENCE RESISTORS
A known 10K resistor is used to determine the resistance of the Auxiliary Inputs. If the values of the resistors are
not exactly 10K, or if other values are desired for the known resistors, simply left-click on the Update Resistors
button and the Update Reference Resistors window will appear. Simply enter the correct reference resistance and
left-click Update. Once again, this is only a software value, so it is not stored on the device, but it will be recalled
each time the program is started.
COMMANDS
The Commands section provides access to the commands of the Command Register. Left-click on the Stored OCV
button to force an OCV Calculation based on the voltage stored as the Initial Voltage. This will modify both the
Relative Capacity Register and the Last OCV Register.
Left-click on the Present OCV button to force an OCV Calculation based on the present state of the Voltage
register. This command will also modify the Relative Capacity and Last OCV Registers. This command should only
be sent when there is an OCV condition on the cell. If current is flowing, a OCV calculation value will occur based
on a loaded voltage, rather than an open-circuit voltage. This error will persist until an actual OCV condition is
encountered and an OCV calculation can take place. This command is very useful when the DS2786 EV kit is
powered by a power supply and the voltage is changed quickly and the user wants to monitor the Relative Capacity
change with changes in voltage.
A Power-on Reset (POR) can be forced by left-clicking on the Force POR button. This will send the DS2786
through its Power On sequence.
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