I try to make some noise using a small 8 OHm @ 1 kHz Buzzer connected to the STM32F446 DAC_OUT1. Seams the PA4 pin got damaged due to high or reverse voltage induced by the buzzer. I used th push/pull GPIO config. Is it possible to directly drive this buzzer without an external PA IC maybe by enabling the internal DAC-Buffer? Or is it required to drive the buzzer via an PA? Or would the IO cell get damaged due to high or reverse voltage induced by the speakers large inductance?