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Old 6th February 2008, 10:32 AM   #1
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Default help whith a low voltage dc/dc converter schematic

I need a schematic for a low voltage input dc/dc converter to power an 1W white LED from an 1,2V NI-MH cell.
Thanks
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Old 6th February 2008, 10:34 AM   #2
dhaen is offline dhaen  Europe
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Check the Elektor magazine website. A couple of months ago a colleague brought in a 3-pin device that did it all, and was free with the magazine.
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Old 6th February 2008, 12:12 PM   #3
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Linear Technology described a very low voltage DC-DC converter using NFet and PFet synchronous rectifiers -- the LTC3490. TI has the TPS61020 which has even lower min V(in). The TI part is around $3.15 in singles.
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