TPS62175: TPS62175

Part Number:TPS62175

Hi,

When I tie "Sleep" pin on TPS62175DQC ICs to GND, I do expect to see a drop in current delivery to the output, but my circuit is still capable of providing 500+ mA regardless of the state of SLEEP pin. 

I can measure the Quiescent current dropping from around 30uA to around 8uA when the SLEEP pin is tied to GND rather than a "iHgh" logic (around 6.5V in my circuit).

Any Ideas about what am I doing wrong?

I have made four boards and tested this on each one individually, with the same results.

Thanks.