Regulated DC Step-up Convertor with variable output voltage.

Correct me but I don't think such a thing exists as a chip.

I want to use a 9v battery to get a variable 9-14V regulated output, but sticking a regulator on the end of a chip step-up convertor doesn't seem too efficient.

Anyone know of a chip that will do the whole job that requires just connecting up a pot to control the output voltage? I don't need much current, say 20mA. Thanks

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Check out the TL499. When used as a step up DC-DC converter, the regulation is in the switcher.

You do need to add a pot, a couple of resistors and caps, and an inductor.


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