GS7903 alternative or source

Semiconductor Integrated Circuits (ICs)
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1

I have a Dell AIO whose GS7903 IC overheats. I cannot find a datasheet nor a local NA source. Anyone have a datasheet or alternative equivalent IC?

2

The GS7903 is made by Green Solutions Technology

GS7903

What package is on your pcb? (TDFN8-2x2 or PSOP-8 ? )

Regards,

3

Hi Robert. Thanks for your prompt reply. It’s PSOP-8 packaging. unfortunately, they say no cross product is available and they don’t show a pin-out on their “Datasheet.”

4

Correct, i also didn’t find a full package data sheet… With the PSOP-8, i was thinking Texas Instruments could have been an option, but their cross lookup says no…

Regards,

5

Robert,

Sincere thanks for looking. I will just have to order one from China and hope it’s the solution.

Larry

6

Hi larrysabo,

Chances are decent that one or more of the parts in this link might work, but because we don’t have any pinout info on your part, it would be difficult to know for sure.

If you are not in a hurry, you could do some board probing and then compare to pinouts of parts from the link provided and see if any of them seem to match up.

7

Thanks David_1528! I’ve ordered some GS7903 from China but am game to find something much sooner if possible. I’ll look through the suggested ICs and see if I can match something that’s not likely to blow up my customers MB! LOL

8

Not sure it’s helpful but attached is a picture of the IC and attached components. I measure 3.2v on pin 1. pin 2 is ground, and pin 6 has 5.0v. The others have 0.2v.


GS7903 and surround
GS7903 and surround800×417 116 KB

1 Like
9

Well, at first glance, the AP2303MPTR-G1 looks plausible. I certainly can’t say with any certainty, and I’m not intimately familiar with the particulars of how finicky DDR power is, so it’s still questionable.

Additional possibilities:

10

Thanks very much David. I’ve ordered some AP2303MPTR-G1 and will give one a try. I’ll update the post when I find out how it goes.