Нет это значит что у вас должно быть два блока питания с выходами минимум 7В на логику и 5В для мотора, ну конечно никто на таких напряжениях не пользует сеи девайсы, потому вам нужно ориентироваться на типичные значения питаний 9 для логики и 24 силовое.
Для ШД эти напряжения имеют другой смысл чем вы описали.
ШД подойдет, вполне.
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