Other Parts Discussed in Thread: REF3225
In the datasheet, section 7.5, the ENABLE pin leakage current is specified to be 1-2uA. Does this mean that there is a weak pulldown on the ENABLE pin? We would like to know if this pin can be floating for any length of time during device power up. The circuit where this part is used is referenced below.
We are currently using part REF3225 and occasionally see high shutdown current after power up. When testing with a REF3425, we do not see high high shutdown current after power up (same circuit). That datasheet for the REF3225 specifies a ENABLE pin leakage to be much less at only a few nA.
Is there any risk of improper device operation if the ENABLE pin of the REF3425 is floating for some length of time (no more that a few ms) during power up?