TLV9032: TLV9032 Load

The absolute maximum ratings do not limit the output current itself, but limit the duration of a short circuit to 10 s. So if this does not happen too often, you should be fine.

What is the purpose of this circuit? If you want a latched output, consider using a flip-flop.

I doubt that the FET has a gate capacitance of 1000 nF.

Anyway, this should be OK.

Hi Clemens,

The 1uF capacitor is external, on the gate-source of the fet.

Hello Maor,

The peak charge current will be limited by the current limt. 

The current limit can be seen as the sharp upward peak in the sourcing current graph

The current limit is about 70mA at room temp.

Electrically, it will not damage the device, but it will cause a rise in die temperature.

The duty cycle of the pulses (ratio of pulse width to rep rate) will determine the ultimate total die temp rise. So you need to ensure that the die temp does not rise above 125C (including ambient).

Hi Maor,

In simple terms, yes. A steady-state DC short would eventually destroy the device. Low power devices like these usually do not have thermal protection. The pulse is exponential, not square, so it is a little more complicated than a simple pulse. In short, the higher the rep-rate, the higher the die temp.

While I hate to promote competitors, ON does have an excellent appnote on pulsed thermal heating calculations:

 https://www.onsemi.com/pub/Collateral/AND8219-D.PDF