I'm using BQ24192 for one of my projects as the main PMIC. Please help me to find a solution for the below described problem.
I'm giving an input of 5V without a battery installed and I'm getting a Vsys voltage of 4.1V. When I'm installing a battery to the running board, the Vsys is suddenly going down to my battery voltage Vbat (I used a battery with 3.8V) and starts to charge the battery. As the battery charges, the Vsys is also increases up to 4.1V.
Now, If I increase the input voltage to 9V, then I'm getting the Vsys 4.2V instead of the battery voltage and battery charging continues up to full as expected.
- Is there any input voltage threshold to get the 4.3V output from SYS pin?
- Why I'm getting the battery voltage as SYS voltage when powering with 5V supply with battery installed?
- Why I'm getting 4.1V without the battery where the specified output voltage should be 4.36V?