Смотрите на LT3083
_http://cds.linear.com/docs/en/datasheet/3083fa.pdf
_http://cds.linear.com/docs/en/demo-board-manual/dc1585af.pdf
и ПП
_http://www.ebay.com/itm/lt3080-lt3083-pcb-regolatore-LDO-tensione-lineare-LOW-NOISE-DAC-Audio-1-1-A-3A-/291955280302?hash=item43f9e409ae:g:2eEAAOSw9eVXUZUL