Requiring no secondary components, the HV9971 isolated, constant-current LED driver specifies a current accuracy of ±3%. The IC uses primary side current sensing to lower component counts. It accepts ac input voltages from 80 to 264 Vac and performs optimally at a constant frequency of 100 kHz. Available in an eight-lead SOIC package, pricing is $0.88 each/1,000. SUPERTEX INC., Sunnyvale, CA. (800) 222-9883.