TPS22921: Query regarding the Logic input pin.

Hi Aditi, 

Thanks for reaching out on E2E! If you look at Table 8.3 of the TPS22922 datasheet, "Recommended Operating Conditions", you can see specifications for VIH (high) and VIL(low). 

The minimum ON threshold is 0.85V, and the maximum OFF threshold is 0.4V. We don't have any hysteresis control, but we have built-in circuitry that prevents the device from switching ON and OFF rapidly if there's a slow rising input.

Thanks,

Arthur Huang

To find the latest information on Power Switches, visit www.ti.com/powerswitch

Please click "This resolved my issue" button if this post answers your question.

Hi Aditi, 

The maximum rise time will ultimately be dependent on your operating conditions and external components around the load switch. The main factors that determine your rise time include load resistance, input voltage, and slew rate. 

You can get an approximate answer from the slew rate and input voltage. 

You can also read more here, Timing of Load Switches, for more information regarding rise time.

Thanks,

Arthur Huang

To find the latest information on Power Switches, visit www.ti.com/powerswitch

Please click "This resolved my issue" button if this post answers your question.