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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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25th Nov 2020, 1:47 pm | #1 |
Dekatron
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 5,263
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i.d a chip
Just after a second opinion on an SOIC8 chip from an SMPSU.
I think it's a UCC3808 (or chinese clone) but can't be sure. It drives the primary of a push-pull gate drive transformer from pins 6-7. It's too small to photograph but I've reproduced the writing here.
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Kevin |
25th Nov 2020, 2:45 pm | #2 |
Heptode
Join Date: Aug 2009
Location: Liverpool, Merseyside, UK.
Posts: 704
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Re: i.d a chip
Yes I’d agree that’s the one, 3808 pins 6&7 are the outputs so that makes sense.
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25th Nov 2020, 2:48 pm | #3 |
Nonode
Join Date: Oct 2008
Location: Warsaw, Poland and Cambridge, UK
Posts: 2,669
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Re: i.d a chip
That looks like the Unitrode logo in the bottom left (the underlined U). I'd say it's a bona fide UCC3808-1. TI bought Unitrode some time ago.
https://www.ti.com/product/UCC3808-1 Chris
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25th Nov 2020, 9:35 pm | #4 |
Dekatron
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 8,171
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Re: i.d a chip
Yes, quite a useful little chip, app notes should be available on the web
Ed |
25th Nov 2020, 11:36 pm | #5 |
Dekatron
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 5,263
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Re: i.d a chip
thanks folks!
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Kevin |