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HT16K33 reverse voltage?
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HT16K33 reverse voltage?

by srklipst on Mon Sep 20, 2021 3:53 pm

Dear friends:

I have a HT16K33 breakout board (catalog # 1427), and I'm setting up an array that Just May Possibly involve reverse voltage back to the driver anode pins (for example, from pin A1 to pin A0 for one matrix drive duty cycle). I read the spec sheet from Holtek, and I couldn't even find the words 'reverse voltage' in the whole document. ¯\_ (-_-) _/¯ I have no idea, no data.

Does anyone know if there is some data I could use? Or any experience with this issue?

( nota bene: I don't want to get into gating with diodes because I really don't need the voltage drop (unless it was a Schottky diode with 0.5V drop - IF absolutely necessary ) and I also have limited PCB real estate to cram more stuff into. )

Thanks in advance for your advice. :)

srklipst
 
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Joined: Mon Feb 18, 2019 6:38 pm

Re: HT16K33 reverse voltage?

by sj_remington on Tue Sep 21, 2021 10:53 am

I'm setting up an array that Just May Possibly involve reverse voltage back to the driver anode pins
That does not sound like a good idea, and I suspect it would be considered a serious design error in engineering circles.

sj_remington
 
Posts: 148
Joined: Mon Jul 27, 2020 4:51 pm

Please be positive and constructive with your questions and comments.