The circuit in Figure 8-2 highlights the use of the features of the LMZ20501. The PG output is open drain, and requires a pullup resistor to a logic supply that is commensurate with the system logic voltage levels. If a reset function is not needed, the PG pin should be left open. The EN and MODE inputs are digital inputs, requiring only simple logic levels for proper operation. If the system does not need to control these features, the inputs should be connected to either VIN or GND, as appropriate. See Section 7.3 for details.