TLV3605: Hysteresis control with external voltage instead of resistor

Soo Cheng

Thanks for your post.  Yes, you can force a voltage on the HYST pin to set the hysteresis.  

Chuck

Hi Chuck,

Thanks for the prompt reply.

What is the allowed input voltage range on the HYST pin and how does it reflect to the hysteresis voltage? Any formula to calculate that? 

Thanks. 

Regards,

Soo Cheng

Soo Cheng

I don’t think we have a formula but I’ll see if I can provide a voltage versus hysteresis curve for you. I’ll get back to you tomorrow after I search for the data. I’m also interested in your use case, so I’ll reach out offline if you prefer to share privately. 

Chuck

Hi Chuck,

Thanks for the info. This is exactly what I need.

In my application, we require programmable hysteresis on multiple comparators. By using DCP method, I need to have one DCP for each comparator. By using DAC, I can have one set of DAC with buffer only that fans out to every comparators. 

Regards,

Soo Cheng