3.3 volts on the firebeetle esp32 2 C6 - DFR1075

Hello, 

A lot of firebeetle boards have an enable pin that you can ground to deactivate the on-board voltage converter and directly input 3.3 volts via the 3.3 volts pin. I am using the firebeetle esp32 2 C6. It doesn't have such a pin. Can I still use it with 3.3 volts ? Will I damage the on-board HM6245 ? 

Best regards, 

Alex L