Antoine
I am using the HV5522 on my clock and multimeter projects. Using both
SPI (for the HV5522) and I2C bus level shift.
The voltage for the HV5522 is the same that powers the boost
converter. I tested both 9 and 12V and it works just fine.
I based my design on this app note:
On Jun 1, 12:54 pm, Adam Jacobs a...@jacobs.us wrote:
I understand your point, Terry.. Which I think is the classic Slippery
Slope argument. You get used to cutting corners, before you know it
you're trying the same tricks at work where you design nuclear reactor
cooling systems, the systems
The datasheet does not indicate an operating supply voltage of -0.5 to
+15v, those are the absolute maximum ratings.
Use the part within it's recommended ratings of 10.8 to 13.2 volts and
you won't have any issues. Otherwise, all bets are off.
It never ceases to amaze me when people use a part
Hi Terry.
Indeed I found only one schematic using 12V. Most of schematics available on
Google use 5V. That's why I preferred to ask. I will use 12V with transistors
then.
Thank you for your reply.
Antoine
On 01 Jun 2012, at 13:48, Terry S wrote:
The datasheet does not indicate an
That is interesting. My guess is that there are lots of lazy engineers
out there that have figured out that the part works OK on 5v. That's why
experimentation is so important. If I was going to make a WAG, I'd bet
that it works at 5v although probably at slower speeds. Try it with 5v
if it is
The part is fabbed in HVCMOS, so yes, it will continue to function at
some level down to where the CMOS transistor structures no longer
switch -- probably well below 3 volts. But...
The problem with using a part like that outside its spec is that you
simply can't predict what parameters won't be
I understand your point, Terry.. Which I think is the classic Slippery
Slope argument. You get used to cutting corners, before you know it
you're trying the same tricks at work where you design nuclear reactor
cooling systems, the systems fail due to your design choices that were
outside of
