TPS22912C: Current consumption of enable-pin

Sainer Siagian

Part Number: TPS22912C

Hi,

I would like to drive TPS22912's with microcontroller, but want to know the current consumption of its ON-pin.

If just look at the VOH, VOL of microcontroller and VIH, VIL of the load switch, I need a level converter IC in between.

Meanwhile, microcontroller's VOH's and VOL's voltage margin, basically depends on the sinked current of the ON-pin of load-switch,

which means the lower the current, the lower the VOH's and VOL's voltage drop. If the sinked-current of ON-pin is just a micro order of Ampere, I think I don't need level-converter IC, but if it is around 1-3mA,

I need it.

Thanks

over 3 years ago

0 Kalin Burnside over 3 years ago

TI__Genius 13300 points

Hello Sainer,

The current draw from the ON pin circuitry is approximately 1 uA.

Regards,

Kalin Burnside

0 Sainer Siagian over 3 years ago in reply to Kalin Burnside

Intellectual 370 points

Hi, Kalin

Thanks for the reply. I think your number is typical-number. In worst case, is there a chance it goes beyond 1mA?.

Sainer

0 Kalin Burnside over 3 years ago in reply to Sainer Siagian

TI__Genius 13300 points

Hello Sainer,

It's the input to CMOS logic so it's a very low current draw, it shouldn't reach close to 1 mA at all.

Regards,

Kalin Burnside

+1 Sainer Siagian over 3 years ago in reply to Kalin Burnside

Intellectual 370 points

Hi, Kalin.

Thanks for your reply.

Sorry, to ask you again. So, generally (not specific to TPS22912C), can I think that every enable-pin of Load-switch is the input of CMOS' gate?.

Sainer

0 Kalin Burnside over 3 years ago in reply to Sainer Siagian

TI__Genius 13300 points

Hello Sainer,

Yes it would be accurate to think of our load-switch enable pins that way.

Regards,

Kalin Burnside

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TPS22912C: Current consumption of enable-pin