by Published in Dataweek April 04, 2012

LED driver for lighting applications

Supertex recently introduced the HV9861A, an open loop, average current mode control, LED driver IC designed to drive LEDs using a buck topology.

It is well suited for a variety of solid-state lighting applications, including TV and monitor backlighting, signage, decorative and general lighting.

Because of the patented, novel scheme of current control it employs, the HV9861A does not produce a peak-to-average error like many LED drivers, and therefore improves the accuracy and line and load regulation of the LED current. The IC provides typical current accuracy of ±3% and requires no loop compensation or high-side current sensing because of its proprietary control scheme. Its internally regulated voltage (Vdd) is 7,5 V.

Published in Dataweek
Published in Dataweek



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