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RE: [AVR-Chat] 16 channel I2C LED driver

2010-08-28 by Chuck Hackett

> From: Russell Shaw
> 
> Chuck Hackett wrote:
> > I have done a lot of searching for an LED driver with:
> > - I2C interface
> > - 16 channels (or, two 8 channel devices if 1/2 the price of a 16 channel
> device)
> > - 10 to 30 ma per channel
> > - Individual PWM adjustable constant current on a per channel basis
> > - Ability to identify fault (open/shorted) on individual channels (i.e.: not
> > 'global')
> > - 5v logic supply
> > - DIP or surface mount I can deal with (TSSOP, etc.)
> > ....
> Maybe something here:
> 
> http://www.allegromicro.com/en/Products/Applications/Lighting/displays_and_sig
> nage.asp

Russell,

For a minute I thought that the A6280 would work since it has per-channel PWM, but
it's only 3 channels (and not enough cheaper to justify board space for multiple
chips) and no fault detection ...
 
Cheers,

Chuck Hackett
"Good judgment comes from experience, experience comes from bad judgment"
7.5" gauge Union Pacific Northern (4-8-4) 844 http://www.whitetrout.net/Chuck

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