Lowest Parts-Count Isolated ISL8843?

What the lowest-parts-count circuit for a galvanically isolated DC/DC converter, constant-voltage with current-limiting, using the ISL8843 family, Vin 12V to 24V, Vout 5V, Iout 2A ?

rocelec.widen.net/.../RNCC-S-A0010804421-1.pdf

Is there a different device with lower parts-count?