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Voltage Regulator...

 
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Haplo



Joined: 06 Sep 2003
Posts: 659
Location: Sydney, Australia

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Voltage Regulator...
PostPosted: Tue May 18, 2004 4:10 am     Reply with quote
Can anybody please recommend a linear low-drop 5V 2A voltage regulator (TO220)? Thanks.
rwyoung



Joined: 12 Nov 2003
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Location: Lawrence, KS USA

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PostPosted: Tue May 18, 2004 7:21 am     Reply with quote
Possible choices are:
Linear Technology - LT1528, LT1529 & LT1764/A however I don't believe these are available as TO-220 packages. Drop-out voltage ranges from 600mV down to 340mV, 3A output current

National Semicondutor - LP3856, LP3876, LP3966, LP3853, LP3873 and some others.

I'd suggest you prowl around on Linear Tech's site, National Semiconductor's site, On-Semiconductor (Motoroloa) and Micrel. You have lots of choices based on quiescent current, drop-out (the term "Low Drop Out" is a relative thing), input voltage range, temp rating and pin-outs.
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wojc0008



Joined: 13 Mar 2004
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National Semiconductor
PostPosted: Tue May 18, 2004 7:30 am     Reply with quote
If you need a demoboard let me know. I work for National.
Humberto



Joined: 08 Sep 2003
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Location: Buenos Aires, La Reina del Plata

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PostPosted: Tue May 18, 2004 7:35 am     Reply with quote
KD1084 Series from ST Microelectronics
5V Low Drop (1.5V max)
Guaranteed output current up to 5A
Package TO220

HTH,

Humberto
RatFink



Joined: 01 May 2004
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Re: National Semiconductor
PostPosted: Tue May 18, 2004 9:46 am     Reply with quote
wojc0008 wrote:
If you need a demoboard let me know. I work for National.


OOOH, this is off topic, but can you tell me if National has an IC temp sensor that's rated for more than 300 deg Farenheit? In some of their paperwork I've seen them mentioned, but I can't find any for sell.
Haplo



Joined: 06 Sep 2003
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PostPosted: Tue May 18, 2004 5:28 pm     Reply with quote
Thanks everyone for your inputs. Sometimes simple things like this can waste so much time...
wojc0008



Joined: 13 Mar 2004
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National Temp Sensors
PostPosted: Wed May 19, 2004 6:00 am     Reply with quote
Some digital sensors (some up to 150 C, 302 F)
http://www.national.com/parametric/0,1850,4940-c8-1,00.html

Some analog output sensors (some up to 150 C, 302 F)
http://www.national.com/parametric/0,,4939,00.html

Just email me at [email protected] and I will hook you up with a free demoboard.
SherpaDoug



Joined: 07 Sep 2003
Posts: 1640
Location: Cape Cod Mass USA

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High temp sensors
PostPosted: Wed May 19, 2004 9:22 am     Reply with quote
Above 300F you may have to go to platinum RTDs (not as expensive as it sounds) or thermocouples. It is just hard to package a silicon chip for those temperatures!
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