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Optoelectronics/Displays??

LED driver boasts 3% current accuracy

Posted: 15 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:LED driver? LCD? lighting?

HV9961 LED driver

Supertex Inc. has released the HV9961, an average-mode, constant control LED driver IC designed to drive LEDs using a buck topology.

Well-suited for a variety of solid-state lighting applications, the HV9961 provides current accuracy of 3 percent and requires no loop compensation or high-side current sensing because of Supertex's proprietary average-mode control scheme. The IC features hiccup-mode LED short-circuit protection and both linear and PWM dimming.

Ahmed Masood, VP of marketing at Supertex said, "The HV9961 employs a novel circuit architecture to achieve fast and accurate output current control." He added that its wide input voltage range makes the device well suited for a host of LED lighting applications such as street, architectural, decorative, and industrial, as well as backlighting LCD screens.

The HV9961 is available in SOIC-8 and SOIC-16 packages (HV9961LG-G and HV9961NG-G, respectively) and is pin-compatible with Supertex's HV9910B LED driver. The parts are green and RoHS compliant. Samples of the HV9961LG-G are available from stock. Samples of the HV9961NG-G will be available in three weeks. Lead-time for production quantities is four to six weeks ARO. Pricing is $1.40 for the HV9961LG-G and $1.49 for the HV9961NG-G, each in 1K quantities.





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