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TS5A22362: Will a 1.8V control voltage lead to excessive current draw as described TI appnote

Part Number: TS5A22362
Other Parts Discussed in Thread: TS5A22366

e2e,

I have another question related to the TS5A22362 I was hoping you could help with.

 

The input logic high (min) is 1.4V for both 2.7 and 3.3V operation of the TS5A22362, but I wonder if a 1.8V control voltage would lead to excessive current draw as described in the below appnote.

http://www.ti.com/lit/an/scda011/scda011.pdf

 

We have the TS5A22366 that supports 1.8V logic operation but input leakage at 1.8V Vin is nearly 1 uA with V+ = 3.6V.   Do you have data for what the leakage is at 1.8V Vin (and ideally 3.0V supply) for the 22362?

Thank you,

Adam

  • Hi Adam,

    The application note is talking about the increased supply current consumption Icc that will increase when the switch is in an undefined state.  This effect can get the current consumption up into the milliamp range for some devices when Vih > Vin > Vil.

    There should not be an issue with the excess supply current because that typically shows up when the voltage is between Vih and Vil. As long as you are operating within these specs then the current should be within the datasheet limit.