How to set the resistors to make ADP 5090 runs from 2.2V to 2.5V without battery.
if you use the evaluation board, you only need change the TERM resistor divide as the datasheet table.
I set the resistors according to datasheet ,But i can not catch a rising in Pin PGOOG
can you list your resistor value including the SETPG, SETSD and TERM?
I test the voltage on Pin sys ,0v while the voltage on capacitance is 2.7V
TERM cannot be floating. I suggest you use the resistor divide as below.
SETSD 5.49 4.53
SETPG 5.62 4.32
TERM 6.04 4
if you means that I should set Voltage Threshold to make the system runs from 2.7v to 2.8v?
sorry for the confusion.
TERM 4 6.04
After I set the resistors as you suggest, the voltage on storge capacitance is always less than 2v. So the system does not work.
Could you try another one?
SETSD 4.53 5.49
SETPG 4.75 5.23
TERM 2.74 7.32
For this set of parameters, the capacitor voltage is stable in 2v
i tried it on the ADP5090-1-EVALZ and can get 2.5V at BAT pin and SYS pin.
not sure what board you're usinng and not sure if your soldering is well connected.
thanks you very much! maybe there are problems on my board.i will have a double check.
I have been unable to configure adp5090, but the capacitor voltage can reach more than 2.5v, is there any other power management chip can achieve 2.5v conduction, when the capacitor voltage dropped to about 2v it cut off the MCU system
maybe you can try ADP5091 that includes additional regulated output even if the battery higher than 2.5V.
another one is boost regulator ADP1607.
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