In one embodiment of an agriculture planter, the planter may include a planter frame, a seed hopper, and a trailing arm assembly. In its broadest aspect, the present invention relates to the elucidation and discovery of nucleotide sequences, and proteins putatively expressed by such nucleotides or degenerate variations thereof, that demonstrate the ability to participate in the control of mammalian body weight. The switching unit connects the first charge pump circuit and the second charge pump circuit in series in response to a first switch signal and a control signal such that a second voltage higher than the first voltage is outputted from a first node to a first internal circuit of a semiconductor device.