I am seeking to drive a seven-segment common anode LED display in which each segment (setting aside the decimal point) should be regulated to 78mA or thereabouts. (The digit is 12" tall, hence the high current.) I'd like to send the data to the driver in some serial format, though I am not particular about which. I'm driving Betlux model BL-SE1200B-11UHR (datasheet); the manufacturer didn't reply to an emailed query.
I have not found any common-anode driver capable of anywhere near the required current. A candidate would've been Maxim ICM7212 (datasheet), but it only drives up to 8mA per segment. Or, the Maxim 7221 (datasheet), which can sink a maximum of –45mA per segment, so is getting closer to ,y current carrying needs—but is configured for common cathode use.
Are there any commercially available chips to do this job? (I'm driving six of these digits, so preferably the chip is available in DIP package for easy hand soldering.) Or must I build a driver, combining a demultiplexer with a series of transistors each switching a current limiter for the segments? Or is there another, simpler approach I'm overlooking?