Hey team,
Just a clarifying question on how the device performs. At Vgs = 3.3, the device should still be able to supply 3A, correct? Figure 3/4 only going up to 2.5A is making it appear as if it doesn't.
Thanks,
Cam
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Hey team,
Just a clarifying question on how the device performs. At Vgs = 3.3, the device should still be able to supply 3A, correct? Figure 3/4 only going up to 2.5A is making it appear as if it doesn't.
Thanks,
Cam
Hello Cam,
It will depend on your ambient temperature. The power dissipated at 3.3V with 3A is ~693mW, and the max power dissipation of the device at 75C Ta is 714mW. As long as the application Ta is below 75C it should be fine to operate at 3A at 3.3V.
Reegards,
Kalin Burnside
Hi Kalin,
One more quick question. Did you get those max power numbers from the following:
693mW=(3A^2)*77mhom?
714mW=(150ºC-75ºC) / (105ºC/W)?
We're concerned that it won't have a high enough margin for their reliability target..
Also I think I misunderstood their specifications. It appears they are operating at -3V/3A rather than positive. Based on figure 9 SOA graph, this shouldn't work, right?
Thanks,
Cam
Hello Cam,
You're correct, that is how I got those values. The ABS minimum voltage on the input is -0.3V. This device is not meant to be used under those operating conditions.
Regards,
Kalin Burnside
We do not have any bidirectional load switches or ones that you can apply -3V to the input. What is the application and purpose for using it in this manner?