I've designed a printed circuit board with the typical application circuit of LM2731.
It is intended to use Vin=5V and Vout=9V. The values of the external components used are:
C1=2.2uF; L1=10uH; D=MBR020L; R1=106k; R2=16k; Cf=270pF; C2=4.7uF.
All good when the device is on (Vout=9V). However, when I try to shut down the component (SHDN=0V), I have Vout=4.8V, slightly below the Vin voltage. Is this the correct behaviour of the shutdown functionality? I was expecting 0V in the output.