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