Component identification help! Additional information!

[TOTALCHIPS]

Hi I'm doing a repair and I found a bad component (Blown component). However I have not been able to identify this 4 terminal component yet. So, help will be highly appreciated. Additional information. Package is 2.04mmX1.32X0.95mm. In an attempt to know what I have, I have exposed the die and die markings.


 

[fzabkar]

It looks like Microchip's logo, but I expect you already knew that.

Could we see the PCB so that we can get an idea of the context?

[TOTALCHIPS]

Thank you very much for you feedback, it really looks like a Microchip logo. However maybe this part was something different since die marking has no microchip logo. Maybe was a Micrel part acquired by Microchip. I have attached 2 more photos a PCB and a close up area. The device is an Arterial pressure monitor and there was a pair of burn components. These drive the air pump. Still not sure what specifically what they are. I thought initially that these may be Mosfets or transistors, but by the die they are something little more complex. Please advise on your thoughts. The lines red have short and the blue lines have short as well.

[fzabkar]

Could it be an "intelligent" high-side load switch???

Something like this ...

https://ww1.microchip.com/downloads/en/DeviceDoc/mic94060.pdf

Other devices ...

https://www.microchip.com/en-us/parametric-search.html/149

By "intelligent", I mean a device that has medical grade protections built in, not something that has an i2c bus, etc.

Edit:

Attached is my guess at the pinout. I suspect that the Vin and Enable pins are connected by a pullup resistor rather than a direct short. I also suspect that Vout is connected to ground via the low impedance of the pump and air valve.