The MAX20733 datasheet does not provide a quiescent current specification. We tested MAX20733EVKIT with a 12V input. Including external devices, the current under no-load condition is around 50mA . Since MAX20733 is designed for high power output application, the maximum output current is >30A . When output is disabled ( DC-DC is turned off via OE pin ) , the current is only 5.6mA .