INA381: Alert sink current

Mathieu Bourassa

Prodigy 20 points

Part Number: INA381

Tool/software:

How much current does the ALERT pin is able to sink. It doesn't seem to be specified in the datasheet

10 months ago

0 Louis L 10 months ago

TI__Expert 5570 points

Mathieu,

Thank you for your patience.

We are currently out of the office for the U.S. Thanksgiving holiday. We will reply to this thread when we return on Monday, 12/2.

Louis

+1 Clemens Ladisch 10 months ago

Guru 317370 points

The datasheet guarantees 3 mA for a voltage drop of 300 mV, and figure 37 does not go above 10 mA. There is no reason to go higher; the suggested 10 kΩ pull-up results in 0.5 mA.

0 Carolus Andrews 10 months ago

TI__Mastermind 22650 points

Mathieu,

Clemens has hit the nail on the head here. Is there a concern of a higher current here potentially damaging the device?

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INA381: Alert sink current