We are using the AP63356Q to step down voltage from 12V to 5V. During test we can see that the circuit constantly draws around 9mA current, with no load on the IC. We have the exact same configuration as in the datasheet here:
But without the C4 and C6 capacitors. The regulator is always enabled as the enable pin is tied to Vin. Reading from the datasheet the Quiescent Supply Current of the IC should be 258uA, so quite far from we measure.
What is the reason for the power draw in this system?