I am trying to repair an e-cigar. One of the ICs is cooked, it has 3 identical on board but I can not identify the company's logo to search for a replacement.

Been on the web for more than an hour already... I am out of ideas... This is the logo enter image description here

and this is the whole IC enter image description here

Any help will be deeply appreciated :)


closed as off-topic by Leon Heller, PeterJ, Nick Alexeev Nov 9 '15 at 6:33

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  • "Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. See also: Is asking on how to fix a faulty circuit on topic?" – Leon Heller, PeterJ, Nick Alexeev
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  • 1
    \$\begingroup\$ Did you check these manufacturers? \$\endgroup\$ – jippie Nov 8 '15 at 14:55
  • \$\begingroup\$ That's a cool searcher @jippie \$\endgroup\$ – Andy aka Nov 8 '15 at 14:59
  • \$\begingroup\$ @jippie Searching by the information on the chip came with no useful results. :( Nice site though thank you! \$\endgroup\$ – Lamaseed Nov 8 '15 at 15:10
  • \$\begingroup\$ It might help if you posted a less zoomed-in photo of the whole board, so we get some idea what these do. \$\endgroup\$ – Fizz Nov 8 '15 at 15:12
  • \$\begingroup\$ How many pins do these have? Can't even tell that from your photo... \$\endgroup\$ – Fizz Nov 8 '15 at 15:18

It is an AON7534 made by Alpha & Omega Semiconductor (AOSMD). The datasheet can be found here.

This is a fairly bog standard N-Channel Trench MOSFET in a DFN package. Typically used for DC/DC converters etc. According to the datasheet it has a fairly high current rating with low \$R_{ds(on)}\$ (less than \$10\mathrm{m\Omega}\$).

And for completeness, this is the logo of the company from the datasheet in case anyone else ever find themselves searching for logos.


  • \$\begingroup\$ Thank you Tom! I cant say that I have seen their logo before... Thanks again! \$\endgroup\$ – Lamaseed Nov 8 '15 at 15:36
  • \$\begingroup\$ @Lamaseed I hadn't either, just typed in "datasheet 7534" into google, the third result was from "aosmd.com" which seemed promising as the logo was a A. \$\endgroup\$ – Tom Carpenter Nov 8 '15 at 15:38
  • \$\begingroup\$ Seriously ?!?!? arg.... This happens to me often lately..... \$\endgroup\$ – Lamaseed Nov 8 '15 at 15:41

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