LED bar graph driver

zachtheterrible

Active Member

• Jul 14, 2006

• #1

Hi everybody, yes it's been a while. My life has started getting busier, but I haven't forgot about electronics n this forum. Which brings me to my question: I need an LED bar graph driver. I checked out the LM3916/4 and that would work for me just fine, but my voltage supply is too low to run that IC. I need something that can run on as low as 4 volts. Any suggestions?

 

audioguru

Well-Known Member

Most Helpful Member

• Jul 14, 2006

• #2

Hi Zach,
Welcome back.
Here are two ICs that work fine on a supply down to less than 3V:

 

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RODALCO

Well-Known Member

• Jul 15, 2006

• #3

UAA 170 from Siemens ?

 

zachtheterrible

Active Member

• Jul 16, 2006

• #4

Hee hee, my first time back to the forum and I already feel like an idiot. Guess I should've looked at the datasheet. I was looking at a picture which showed a supply voltage of 6.8V-18V. Thanks!

 

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oldtimer

New Member

• Jul 21, 2006

• #5

You're not on your own,I do it constantly and it costs me big money sometimes. I'm learning though,I sometimes even read the instructions.

 

Marks256

New Member

• Jul 21, 2006

• #6

Oh god! Man, you know hell is about to break loose the minute a guy reads the instructions! lol