Products, Materials + Tools | Jul 13, 2009

High Accuracy LED Driver Without High-Side Current Sensing

Supertex, Inc. (NasdaqGS: SUPX) 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.
• Fast average current control
• Programmable constant off-time switching
• Linear dimming input
• PWM dimming input
• Output short circuit protection with skip mode
• Ambient operating temperature -40OC to +125OC
• Pin-compatible with the HV9910B
• DC/DC or AC/DC LED driver applications
• LED backlight driver for LCD displays
• General purpose constant current source
• LED signage and displays
• Architectural and decorative LED lighting
• LED street lighting
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.
About Supertex:
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
Add comment

You can add a comment by filling out the form below. Plain text formatting. Comments are moderated.

Question: What is 1 + 2 ?
Your answer:

Provide UVC Disinfection Total Solution for You - Edison Opto

Provide UVC Disinfection Total Solution for You - Edison Opto In recent years, due to the global outbreak of COVID-19, the people's demand for anti-epidemic and sterilization of anti-virus products has risen, ranging from portable sterilization equipment, home appliances sterilization, and public health sterilization. With the rise of environmental awareness ... Read more »


Zhaga and the DALI Alliance Add Sensors and Controllers to Zhaga-D4i Certification

Zhaga and the DALI Alliance Add Sensors and Controllers to Zhaga-D4i Certification The joint Zhaga-D4i certification program from the DALI Alliance and the Zhaga Consortium has already qualified a number of Zhaga-D4i Book 18 outdoor luminaires with Zhaga receptacles and D4i components. Now, certified D4i control devices with Zhaga connectors can also be submitted for Zhaga-D4i ... Read more »