{HEAD ~ The control circuit} comprises a plurality of current control stages, {TAIL ~ a minimum circuit}, a sensing circuit, and a feedback circuit 
comprises
{ HEAD ~ The control circuit } comprises a plurality of current control stages , { TAIL ~ a minimum circuit } , a sensing circuit , and a feedback circuit
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH