P
Phil Hobbs
- Jan 1, 1970
- 0
So we've got the +-40V sorted out, thanks to all. The next bit to
re-examine is the two buck regulators, both LM2594s, one for +5 and one
for -15.
The TI LM2594MX-ADJ is about $1.40 in 100s, and there are zillions in
stock. The ONsemi clone, LM2594D, is only 64 cents, but it looks like
Digikey is the only distributor with any stock, and they have less than
one reel.
I like the medium-old bipolar switchers, because their nice slow edges
make me less worried about switching junk getting into my low level
circuitry.
Any idea why the ONsemi ones are both cheap and apparently unpopular?
Any suggestions for buck chips that will handle at least 40V and 0.5 A?
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
re-examine is the two buck regulators, both LM2594s, one for +5 and one
for -15.
The TI LM2594MX-ADJ is about $1.40 in 100s, and there are zillions in
stock. The ONsemi clone, LM2594D, is only 64 cents, but it looks like
Digikey is the only distributor with any stock, and they have less than
one reel.
I like the medium-old bipolar switchers, because their nice slow edges
make me less worried about switching junk getting into my low level
circuitry.
Any idea why the ONsemi ones are both cheap and apparently unpopular?
Any suggestions for buck chips that will handle at least 40V and 0.5 A?
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net