Products, Materials & Tools | Nov 09, 2011

Switch Dimmable LED Driver from Supertex Works with Any Standard Light Switch

Supertex, Inc. (Nasdaq GS: SUPX) today introduced HV9801A, a power saving, switch dimmable, LED driver integrated circuit (IC) designed to drive LEDs in dimmable household and office lighting applications. The IC dims LED lamp brightness to one of four preset levels through simple, rapid toggling of a light switch. Light levels progress up and down sequentially and if the switch is turned off for more than a second, the lamp returns to full brightness.

Features:
• Four level switch dimming
• Very accurate current regulator
• Output over-current / short circuit protection
• IC over-temperature protection
• Available in 8L-SOIC and 16L-SOIC packages

Applications:
• Switch dimmable LED bulbs and fixtures

Switch dimming offers an attractive alternative to TRIAC dimming as it enables dimming of lamps in any location, provides a better quality light source without flicker, and increases energy efficiency through the reduction of the excess circuitry required to accommodate the holding current of the TRIAC dimmer. HV9801A works with all existing light switches and doesn’t require installation of a wall dimmer.

As opposed to many LED driver ICs that utilize peak current control to regulate output current, HV9801A employs a patented average-mode current control method that requires no loop compensation or high side sensing. This proprietary control method provides quick and accurate response to input voltage fluctuations and delivers exceptional accuracy (over 97%) and line and load regulation of the LED current.

“HV9801A is an ideal driver solution for solid-state lighting applications that utilize dimming,” states Stephen Lin, Vice President of Marketing at Supertex. “The IC further builds on Supertex’s history of innovation and recognized leadership in the offline LED driver IC market.”

The HV9801A is available in SOIC-8 and SOIC-16 packages (HV9801ALG-G and HV9801ANG-G, respectively). Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing is US$0.72 for the HV9801ALG-G and US$0.84 for the HV9801ANG-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, printer and display, industrial and telecommunication industries. Supertex product, corporate and financial information is readily available at www.supertex.com.

FEATURED

BJB Connection Interface for Outdoor LED Modules

BJB Connection Interface for Outdoor LED Modules The model for the future design of human living areas is a "smart city" with intelligent technologies and applications. Smart Cities utilize sensors and controllers in outdoor lighting to conserve resources and enhance human comfort and safety. Read more »

FEATURED

Cree Launches Industry’s Highest Efficacy 90 CRI COB LEDs

Cree Launches Industry’s Highest Efficacy 90 CRI COB LEDs Cree, Inc. announces the XLamp® eTone™ LEDs, a breakthrough set of chip-on-board (COB) LEDs that delivers beautiful 90 color rendering index (CRI) light quality at the same efficacy as today’s standard 80 CRI LEDs. Delivering up to 155 lumens per watt (LPW) at 3000K CCT, 85°C, Cree’s new eTone COB ... Read more »

FEATURED

Nanosilica Filled Epoxy with High Abrasion Resistance

Nanosilica Filled Epoxy with High Abrasion Resistance Master Bond EP30NS is a two component epoxy system that cures at room temperature or more rapidly at elevated temperatures. It is optically clear especially in thin sections and can be used as an adhesive, sealant, coating and encapsulation compound. EP30NS offers dimensional stability, linear ... Read more »

FEATURED

WHITE PAPER - How to Overcome the Security Challenges of Smart Lighting

WHITE PAPER - How to Overcome the Security Challenges of Smart Lighting IoT-powered lighting systems are backbones for smart building applications such as energy harvesting, space optimization, and predictive maintenance. Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

page_peel