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BQ24780S: BQ24780 - How To Manually Drive ACDRV To Turn Off ACFET & RBFET

Albert Han
Prodigy 75 points
Part Number: BQ24780S
Other Parts Discussed in Thread: BQ24780, BQ24800,

Hi,

BQ24780 can detect AC charger input by ACDET > 2.4V and it can operate under 26V. The high operating voltage range is way higher than our system application.

So I would like to add ADC input to read AC charger input level and let SW control ACFET & RBFET manually when AC charger input is higher than 18V (e.g.). Then valid input range should be between 2.54V on ACDET and 26V at VCC. 

However, I can't find a way to control ACDRV to pull to low manually or by SW. 

How can I put the signal to low when we want?

Regards,

Han