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Tool/software:
Dear TI Engineer,
We have some question about the /QON pin of BQ25600, that is, we connected the/QON PIN to GND through a toggle switch S1. However, after the switch, this pin will always be at a low level. We want to pull it to a high level through an external pull-up. Did the BQ25600 support this?
The reason why we are doing this to achieve ultra-low power consumption when the device is turned off. When the device is turned off, we need the BQ25600 to enter ship mode. But at this point, the /QON pin is connected to GND through the switch, so we want to pull the it to a high level through external pull-up.
Considering that QON has internal pull-up, we have added a reverse diode for protection.
Thanks,
Kind Regards
Hello,
The /QON pin has an internal pull-up, there is no need to connect it to anything but the switch to GND.
Regards,
Mike Emanuel
Hello Mike,
We know there has an internal pull-up of /QON pin. The switch SW1 will keep the /QON pin grounded continuously after force the BQ25600 exit ship mode. What we are concerned about is that when the /QON pin is connected to GND for more than 8 seconds, the full system power reset will occurs, which will affect the power supply of the system, so we want to pull this pin to a high level through external pull-up.
Now we need to confirm what is the minimum voltage required for the high level of the QON pin? Does it the same as the PSEL and /CE pin (The minimum voltage for high level needs to be greater than 1.3V)?
Thanks,
Kind Regards
Can you please draw a diagram with clear labels of your intended setup at each stage?
Regards,
Mike Emanuel