Various example embodiments relate to a capacitor action-based start-up circuit for bandgap reference (BGR) generation. The start-up circuit comprises a start-up capacitor connected to a VBG node of a BGR sub-circuit. The start-up capacitor determines if a state of operation of the BGR sub-block is one of normal, and failure. The start-up circuit comprises an output transistor connected to an NB node of the BGR. The output transistor charges the NB node to maintain normal operation of the BGR sub-block, if the state of operation of the BGR sub-block is failure, thereby facilitating dynamic behavior.