Help identifying ic in Crucial SSD

[ciccio]

Somebody reversed an HD power plug  and three Crucial MX300 SSDs released tha magic smoke (they got 12 V instead of 5V).
In each of them one IC, that is connected to 5 V dc in, literallly exploded.
Impossible to read any marking on them.
I got a working SSD, and the IC is a 8 pin mini SOIC, marked SLO.
It seems a custom marking, no other letters or numbers, only SLO
I've googled for SLO marking, but the only result is a 5 pin regulator
Any help or any informaion would be greatly appreciated.
(I took a photo of the good IC, but until tomorrow I will not have access to the camera)
Best regards

[fzabkar]

I did a lot of work on Crucial SSDs at HDD Guru. There should be plenty of info there:

https://www.bing.com/search?q=crucial+mx300+site%3Ahddguru.com

I also have a large database of SSD and HDD ICs here:

http://www.hddoracle.com/viewtopic.php?f=100&t=1577

TLV62084, Texas Instruments, marking SLO, 2A High Efficient Step Down Converter, 2x2mm WSON, 8-pin, 2.7 - 6V Input:
http://www.ti.com/lit/gpn/TLV62080

[ciccio]

Thank you very much for the informations.
I see a little problem: the TI part has a different case than the actual part installed in the SSD, which seems a custom version.
The part has no TI markings, only SLO, and is a micro TSOP (I don't know the correct name) with visible pins, whilst the TI part has a WSON package, with pads under the case.
I will remove the damaged ones to see if there are pads under the case.
A replacement could be attempted, but I see a lot of difficulties...
I'll post about the results.
Best regards

[Monkeh]

I would suggest you do a little extra probing before attempting repair. I have an MX500 which suffered the same fate from a friend (Corsair power supply, by any chance?), not only is there a hole in the PCB around the one regulator, but several other power rails are shorted. Most likely unrecoverable.

[ciccio]

Yes, it was a Corsair power supply.
I think the user reversed the Molex plug powering a box housing 4 SSDs, and 3 of them (Crucial) blew, whilst the Samsung one survived.
I'll check for other shorts.
Best regards

[Monkeh]

Yes, it was a Corsair power supply.
I think the user reversed the Molex plug powering a box housing 4 SSDs, and 3 of them (Crucial) blew, whilst the Samsung one survived.

The SATA cables will readily plug into the PCI-E outputs at a slight angle and feel normal. They did not properly key them. Very expensive goof.

[ciccio]

Bad news: I desoldered the ICs and I discovered that  the case was actually the standard TI case, so a replacement could work, but tracks connected to pin 8 and 7 (input and PWM output) were burned beyond repair, and I could not follow them for soldering a bridge wire.
Second issue: desoldering (with hot air) the burnt ICs was a nightmare, because of the tab under the case, so I realized that resoldering the replacement was beyond my capabilities and my humble equipment.

Thanks to all members that spent their time for helping me.

Best regards

[fzabkar]

I suspect that the user may have interchanged modular power cables between two different PSUs. The pinouts for these cables are not standardised.

Warning: do not interchange modular PSU cables:
http://www.hddoracle.com/viewtopic.php?f=56&t=2545

As for the SSD, it's a travesty that Crucial didn't spend the extra 10 cents on a 5V TVS diode (or a 5V e-fuse), as most other SSD manufacturers now do. If you need the data, you could mock up some external regulators and tap into the filter caps on the corresponding PCB rails.

[Monkeh]

I suspect that the user may have interchanged modular power cables between two different PSUs. The pinouts for these cables are not standardised.

No, it's just really easy to plug it in the wrong place on the Corsair ones.