LED Driver IC features constant current control.
July 21, 2009 -
Designed to drive LEDs using buck topology, average-mode Model HV9961 provides current accuracy of ▒3% and requires no loop compensation or high-side current sensing. Device features hiccup-mode LED short-circuit protection and both linear and PWM dimming. Available in SOIC-8 and SOIC-16 packages, IC is RoHS-compliant. It is suited for backlighting LCD screens, as well as street, architectural, decorative, and industrial LED lighting applications.
LED Driver from Supertex Delivers Very High Accuracy via Constant Current Control
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
1235 Bordeaux Dr.
Sunnyvale, CA, 94619
Press release date: July 9, 2009
HV9961 Achieves High Accuracy Without High-Side Current Sensing
SUNNYVALE, Calif., July 9, 2009 - Supertex, Inc. (NasdaqGS: SUPX) today introduced the HV9961, an average-mode, constant control LED driver integrated circuit (IC) designed to drive LEDs using a buck topology. It is well suited for a variety of solidstate lighting applications.
The HV9961 provides current accuracy of +/-3% and requires no loop compensation or high-side current sensing because of Supertex's proprietary averagemode control scheme. The IC features hiccup-mode LED short-circuit protection and both linear and PWM dimming.
"The HV9961 employs a novel circuit architecture to achieve fast and accurate output current control," states Ahmed Masood, Vice President of Marketing at Supertex. "With its wide input voltage range, this device is 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 3 weeks. Leadtime for production quantities is 4-6 weeks ARO. Pricing is US$1.40 for the HV9961LGG and US$1.49 for the HV9961NG-G, each in 1K quantities.
Supertex, Inc. is a publicly held mixed signal semiconductor manufacturer, focused in high voltage analog and mixed signal products for use in the medical, LED lighting, imaging, industrial, and telecommunication markets. Supertex product, corporate and financial information is readily available at www.supertex.com.