AVR-Chat

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.)

I am looking at using the TI TLC59116
(http://focus.ti.com/lit/ds/symlink/tlc59116.pdf) which seams like a very capable
device.

Anybody have another favorite I should look at?

The "individual channel PWM" knocks out a lot of devices I looked at ...

I could look at using serial-shift type interface if it was lots cheaper but I'm
thinking that I may have other I2C devices on the board later.  

The TLC59116 is $3.92 at Newark (only supplier I found with stock).
 
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

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.)
> 
> I am looking at using the TI TLC59116
> (http://focus.ti.com/lit/ds/symlink/tlc59116.pdf) which seams like a very capable
> device.
> 
> Anybody have another favorite I should look at?
> 
> The "individual channel PWM" knocks out a lot of devices I looked at ...
> 
> I could look at using serial-shift type interface if it was lots cheaper but I'm
> thinking that I may have other I2C devices on the board later.  
> 
> The TLC59116 is $3.92 at Newark (only supplier I found with stock).

Maybe something here:

http://www.allegromicro.com/en/Products/Applications/Lighting/displays_and_signage.asp

> 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

Its so great you posted this.  A friend of mine is looking to drive a  
bunch of LEDs with only a few wires.  I'll have to check this out.

On Aug 27, 2010, at 5:59 PM, 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.)
>
> I am looking at using the TI TLC59116
> (http://focus.ti.com/lit/ds/symlink/tlc59116.pdf) which seams like a  
> very capable
> device.
>
> Anybody have another favorite I should look at?
>
> The "individual channel PWM" knocks out a lot of devices I looked  
> at ...
>
> I could look at using serial-shift type interface if it was lots  
> cheaper but I'm
> thinking that I may have other I2C devices on the board later.
>
> The TLC59116 is $3.92 at Newark (only supplier I found with stock).
>
> 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
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

you may use TPIC6A595 shift register, with 1A o/p per channel.., but its
spi., similay to 74hc595.., but powerfull

On Sat, Aug 28, 2010 at 9:34 PM, Philippe Habib <phabib@well.com> wrote:

>
>
> Its so great you posted this. A friend of mine is looking to drive a
> bunch of LEDs with only a few wires. I'll have to check this out.
>
>
> On Aug 27, 2010, at 5:59 PM, 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.)
> >
> > I am looking at using the TI TLC59116
> > (http://focus.ti.com/lit/ds/symlink/tlc59116.pdf) which seams like a
> > very capable
> > device.
> >
> > Anybody have another favorite I should look at?
> >
> > The "individual channel PWM" knocks out a lot of devices I looked
> > at ...
> >
> > I could look at using serial-shift type interface if it was lots
> > cheaper but I'm
> > thinking that I may have other I2C devices on the board later.
> >
> > The TLC59116 is $3.92 at Newark (only supplier I found with stock).
> >
> > 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
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>
>  
>



-- 
With Regards
Dhinesh Kumar .R


[Non-text portions of this message have been removed]

The Elektor-News Weekly Update had a link to this:

http://www.austriamicrosystems.com/LED-Driver/AS1119

HTH

Alex

This looks pretty neat but you are not going to be using these in home
projects unless you can solder down BGA style packages and for that you will
need a stencil machine and a reflow oven or you will have to have them made
professionally and that is going to cost you if only for 1 or a few boards.
 
What we need here is someone to make a piggy back PCB for this device so we
have regular pins to work with.! If there was enough interest in something
like this then I would be interested in doing it.
 
Dave.

From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Alex Shepherd
Sent: 29 August 2010 03:39
To: AVR-Chat@yahoogroups.com
Subject: RE: [AVR-Chat] 16 channel I2C LED driver
 
  
The Elektor-News Weekly Update had a link to this:

http://www.austriamicrosystems.com/LED-Driver/AS1119

HTH

Alex


[Non-text portions of this message have been removed]