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dual output dc/dc converters with +-12V output

Hi - I need a DC/DC converter/controller that gives about a +-12V regulated output. It can be less than that or greater than that, but it needs to be very clean. Load current should peak at under 1ma on both lines. I have 3.3V and 5V supplies available. I feel like this should be a very basic, simple, common component but I can't find any parts that meet these specs. I'm thinking I'm just searching for the wrong thing. I found the MAX680 which mostly looks OK, but it's not regulated.

Any suggestions? I can't believe I'm having difficulty finding such a part.

thanks!

-Mike

Reply to
Mike Noone
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Have a look at LT1533 from linear, and AN70 from Linear

martin

Reply to
martin griffith

Hi Martin - I'm really hoping for something more integrated than that. I looked further into it and peak current should be maxing out at about

250 micro amps. I think AN70 is more about designing higher current solutions.

Thanks,

-Mike

Reply to
Mike Noone

OK, maybe a cockroft walton missmash driven fron a nand gate osculator, since you only need a ma or so

martin

Reply to
martin griffith

Page 8 of the LT1615 data sheet shows a dual supply, 4 ma +- 20V

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[url all on one line] Also see LT3464.

Probably not as quiet as you want - unlike the LT1533, which is advertised as "ultra quiet", the LT1615, LT1615-1, and LT3464 are just low-power boost converters. You'd need to add some filtering and/or regulation.

-jiw

Reply to
James Waldby

formatting link
[url all on one line] Also see LT3464.

At +-20V that would give me plenty of room for linear regulation - and

4ma gives me plenty of breathing room. External parts count is fairly low, so I'd say that this seems like a good solution.

Thanks!

-Mike

Reply to
Mike Noone

I'm pretty sure you're just making that name up, since Google's never even heard of it ;)

-Mike

Reply to
Mike Noone

Just use 'Cockroft Walton'. The 'missmash', was probably a mispelling of 'mishmash'. These are used in just about every common high voltage supply around. Very commonly used from NE555's, rather than nand gates (more drive), to generate low power supplies.

Best Wishes

Reply to
Roger Hamlett

You could use the hin232 or max232 ttl-to-rs232 level converters. They put out +-10v. But it depends on whether your application requires the extra 2 volts.

I had a dac/> Hi - I need a DC/DC converter/controller that gives about a +-12V

Reply to
samiam

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