TPS54231: Why we specify EN current absolutely maximum value to 100uA?

Howard Zou

Genius 12365 points

Part Number: TPS54231

Hi,

in the datasheet it says the current from EN is either 1uA or 4uA, so it would never exceed the maximum value, right?

Are there any case that current of EN pin would be bigger than 4uA?

over 3 years ago

0 Vincent Zhang(BSR) over 3 years ago

TI__Expert 4795 points

Hi Howard,

4uA is typical value at 'Enable threshold + 50 mV condition', the maximum value should be larger than 4uA.

0 Howard Zou over 3 years ago in reply to Vincent Zhang(BSR)

TI__Genius 12365 points

Vincent,

thanks.

So EN current is only related to the device itself, right?

It's not possible that we design this circuit wrong and then cause the current becomes bigger, right? Then we don't have to worry about the probability that EN current may exceeds the maximum rating.

0 Vincent Zhang(BSR) over 3 years ago in reply to Howard Zou

TI__Expert 4795 points

Hi Howard,

Yes the EN current is only related to the device it self. Changing the external resistors won't cause the current becomes bigger.

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TPS54231: Why we specify EN current absolutely maximum value to 100uA?