В общем появились свободно в продаже микросхемки LM2940-5
отличный стабилизатор с малым падением напряжения при токе 1А не более 1в Корпуса бывают разные от TO-220 до SOT-123 единственно что наверное может ограничить их применение это ток всего 1А но для многих случаев достаточно. И главное не забывать обязательное наличие конденсатора на 20мкф (тантал) на выходе!!!(без него не будет работать 😃 ) …Да и разпиновка у них другая чем у 7805
В Питере они есть в Микронике
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