Driver chip that supplies a path to Vcc?
Tomás Ó hÉilidhe
The ULN2003 is great when you want to implement a switch that leads to
ground, but I'm looking for a driver chip that provides a path to Vcc.
Anybody know of one? Perhaps something like a PNP version of the
ULN2003?
larwe
> The ULN2003 is great when you want to implement a switch that leads to
> ground, but I'm looking for a driver chip that provides a path to Vcc.
<http://www.google.com/search?rls=en&q=high+side
+driver&ie=UTF-8&oe=UTF-8>; read, learn. But you probably do not mean
Vcc.
Tomás Ó hÉilidhe
> <http://www.google.com/search?rls=en&q=high+side
> +driver&ie=UTF-8&oe=UTF-8>; read, learn. But you probably do not mean
> Vcc.
Okey dokes so I'm looking for a "high side driver". I need 12
channels. Can anyone suggest a chip?
JeffM
>http://www.google.com/search?rls=en&q=high+side
>+driver&ie=UTF-8&oe=UTF-8
That got thoroughly borked in the archive.
http://groups.google.com/group/comp.arch.embedded/msg/46492b55ed5b10f7
If you take out the useless stuff:
rls=en& (language==English)
&ie=UTF-8 (input encoding
&oe=UTF-8 (output encoding)
you get
http://www.google.com/search?q=high+side+driver
AND, if you use hyphens
http://www.google.com/search?q=high-side-driver
or periods,
http://www.google.com/search?q=high.side.driver
it will be submitted as a PHRASE.
Ben Bradley
That search is really "noisy," it mostly gives power MOSFET drivers
that have one to four channels, and furthermore the circuitry to drive
power MOSFET gates is not what you want. You want something that looks
like an open collector PNP transistor with emmiter connected to your
voltage source, with appropriate driving circuitry so it can be
conntrolled from the "low side."
Go to digikey and search for:
Toshiba driver source
This brings up a few 8-channel parts like what you want. You'll have
to use two of those to get 12 channels, I'd be very surprised if such
a chip is made with more channels. I've seen similar 8-channel parts
from other manufacturers (TI, I think), I just can't think how to find
them now. I looked for just this thing a few years ago and they were
not easy to find, mostly because they're rare relative to all the
"high side" MOSFET drivers that everyone makes.
