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.