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Old 11-14-2010, 10:48 PM #1
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Default DX AMC7135 question?

I see that DX sells 700mA and 1050mA AMC7135 drivers.
http://www.dealextreme.com/details.dx/sku.1885
Is the only difference the number of 7135 IC's on the board?
If I buy the 1050mA drivers, and manually remove one of the ICs would I have a 700mA driver?


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Old 11-14-2010, 10:58 PM #2
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Default Re: DX AMC7135 question?

Yes that's correct
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Old 11-14-2010, 11:01 PM #3
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Default Re: DX AMC7135 question?

Each chip is a 350mA regulator.... so... you do the math.
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Old 11-15-2010, 12:46 AM #4
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Default Re: DX AMC7135 question?

Math stuffs hard

You can also stack em like coins if 1400mA from one board isn't enough.
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Old 11-15-2010, 01:03 AM #5
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Default Re: DX AMC7135 question?

I'd keep a close eye on power disspation if you are going for that option though. If there is any voltage drop to speak of, these chips require proper heatsinking in any appliction that i supposed to run continously.
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Old 11-15-2010, 02:19 AM #6
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Default Re: DX AMC7135 question?

Quote:
Originally Posted by Benm View Post
I'd keep a close eye on power disspation if you are going for that option though. If there is any voltage drop to speak of, these chips require proper heatsinking in any appliction that i supposed to run continously.

This becomes an issue even more so when used for a 445 build
and 2 x 3.6v. They are low drop out chips and get hot fast
contending with the extra voltage.

On a positive note, they have thermal protection so at worst
you end up with a pulsed laser...
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Old 11-15-2010, 05:59 PM #7
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Default Re: DX AMC7135 question?

8.4V into a device with a max rated input of 7V might cause some extra heat.
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