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Posts: 2
Registered: ‎03-09-2017

Si8751 DC Load

I would like to use the Si8751 as a high side FET switch like on figure 3.1 of the datasheet.  Table 4.8 states that the max voltage on any pin WRT ground can only be VDD +0.5V.  Does this mean that the source pin (Pin 5) is only allowed to go as high as VDD +0.5V with respect to the Gnd pin (Pin 4)?  That is the way I read the datasheet but it doesn't really make sense if the input and output sides are supposed to be isolated.

 

Thank you.

Posts: 23
Registered: ‎11-07-2004

Re: Si8751 DC Load

Sorry for the late response. this one must have slipped through the cracks somehow. 

 

However, this has been answered in this thread:

http://community.silabs.com/t5/Other-Products/Si8751-Isolation/m-p/192152

 

Joe