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Thanks Abidr,
The UDN2981 looks ideal for this application - assuming it can handle the current. At 12 volts, I'm looking at an individual segment current of 100mA but this is at a duty cycle of about 10%. I notice that the recommended maximum output rating of this chip is 350mA but there will...
Aah, I see. I missed that bit.
I've had a look at it but I don't think it's going to help in my case. The MAX7219 requires 5 volts and the digit requires 12 volts. The MAX394 doesn't appear to be able to handle the difference between supply voltage and switched voltage and in any case, the max...
Thanks but the 7219 datasheet isn't a problem and I don't need one for the displays as I traced them out. I'm really looking to find the best way of driving them without using something inefficient like a Darlington array.
Dave.
Hello, this is my first post here so please go easy on me. Although I have a bit of knowledge, it's more space than mark - if you see what I mean!
Anyway, I'm working on a little project for which the MAX7219 is almost ideal. I need to drive 8 large seven segment displays but they require more...
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