LED Driver From Supertex Delivers High Current Accuracy via Average Mode Control

SUNNYVALE, CA -- (Marketwire) -- Jan 24, 2013 -- Supertex, Inc. (NASDAQ: SUPX) today introduced HV9803, an open loop, average-mode, current control LED driver IC operating in a constant off-time mode. It is well suited for backlighting LCD panel applications such as TVs and monitors.

The IC features +/-2% current accuracy, tight line and load regulation of the LED current without any need for loop compensation or high-side current sensing. Its auto-zero circuit cancels the effect of both the input offset voltage and the propagation delay in the current sense comparator. The IC features linear and PWM dimming modes. The HV9803 is equipped with a current limit comparator for hiccup-mode output short circuit protection. It also features a programmable input under-voltage shutdown.

"By utilizing Supertex's patented average-mode current sensing technology, HV9803 provides a low-cost LED backlighting solution for an LCD panel," states Alex Mednik, Director of Application Engineering at Supertex. "The 2% accurate current control of this IC ensures uniformity of the LED backlight."

HV9803 is available in a lead(Pb)-free/RoHS compliant SOIC-8 package (HV9803LG-G). Samples are available from stock. Lead-time for production quantities is 4-6 weeks ARO. Pricing is US$0.41 for the HV9803LG-G, 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.

Corporate Headquarters:
Christine Mahiya
Manager, Marketing Communications
408/222-4858

Email Contact 





Review Article Be the first to review this article

Harris

Featured Video
Jobs
GIS Specialist for Metro Wastewater Reclamation District at Denver, Colorado
Upcoming Events
SUE Association at Capitol Skyline Hotel 10 “I” Eye Street, SW Washington, DC - Jul 26, 2018
2018 ENVI Analytics Symposium at The Brown Palace Hotel & Spa Denver CO - Aug 21 - 23, 2018
2018 South Florida GIS Expo at 650 Okeechobee Blvd West Palm Beach FL - Aug 23 - 24, 2018
SPTechCon 2018 at Sheraton Boston Hotel Boston MA - Aug 26 - 29, 2018
Canon: oce crystalPoint
Teledyne Optech
Teledyne:
Interdrone 2018



Internet Business Systems © 2018 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation TechJobsCafe - Technical Jobs and Resumes  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise