Hi All,
Looking for identification of a six pin IC that is marked BLV and AB on it. The measurements are 2.1mm long way, 1.1mm wide (not including the legs at all) and 1mm total height.
I have attached a poor picture of it as I was having a hard time getting a good picture but it shows the markings at least.
Thanks.
Hello,
I looked quite well in our system without making a match. Hopefully we have another team member that can chime in with some information.
Thank you
Ryan
Hi, ATSolutions.
My version of the answer to your question:
SI1469DH-T1-E3
Hi Adam, I didn’t see this reply right away, but you are pretty convinced that it is the right part?
Per the datasheet, here is the part marking format for SI1469DH-T1-E3
Hi ATSolutions,
There’s no way to guarantee that the SI1469DH-T1-E3 is the correct part, though the markings seem pretty close to what’s shown in the datasheet from @Kristof_2649’s post and the image that @Adam7 provided.
An additional means of helping to verify would be to take note the pinout of the SI1469DH.
Make note that pins 1, 2, 5, and 6 are all shorted together. If your part or an identical part from another board is functional, you could test for that. If you don’t have access to a healthy part, perhaps you could check the board and see if those same pin pads are shorted together.
Also, the Gate, pin 3 would typically be connected directly or indirectly via a resistor to an output pin from some sort of controller IC.
And finally, since the SI1469DH is a P-channel MOSFET, the Source, pin 4, would be at a higher potential (voltage) on the board than the Drain. Commonly, the Source would be connected to a voltage supply rail and a load would be connected on the Drain side in a “high-side switch” configuration.
Hi @David_1528, I took a good known unit out of circuit, and it does test as having 1, 2, 5, 6 shorted. So that does seem to match also.
I took a couple pictures of the spots where the failed IC and the working IC came from. I am not sure if they help.
Hi ATSolutions,
Well, I see nothing on your board images that would contradict the theory that the chip is the SI1469DH, though you can’t tell enough from those images to confirm it either.
However, confirming that pins 1, 2, 5, and 6 are shorted together is a pretty strong indicator that the SI1469DH is the right part. There’s no way to guarantee it, but I’d be very surprised if it wasn’t.
