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DJC
Senior
November 17, 2020
Question

LD3985 Why is it called the Inhibit pin, when it should be called enable?

  • November 17, 2020
  • 0 replies
  • 1269 views

In the LD3985 page 2 and 3.

If I set an inhibitor... I turn something off?

"Inhibit input voltage: ON mode when VINH ≥ 1.2 V, OFF mode when VINH ≤ 0.4 V"

Ok, so ill turn it on and "inhibit" the input voltage!.

NO... that is the opposite of what happens.

this is an Enable pin.

(which is what most other LDO documents calls it)

So, to be clear.

INH = high -> Power is on

(not only proven in test, but also, made clear in the test characteristics and fine print).

This was so easy to get wrong.

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