Date: 28/10/2011

600V buck regulator control ICs for LED bulbs

International Rectifier has introduced the IRS2980, a 600 V buck regulator control IC for LED light bulb replacement, LED tube lighting and other non-isolated LED driver applications.

IR claims that the IRS2980 is the first in a family of high-voltage LEDrivIR ICs, and utilizes hysteretic average current mode control for precise current regulation. The LED buck driver features low-side MOSFET drive with high-voltage internal regulator and high-side current sensing. The converter is compatible with electronic PWM dimming allowing for 0%-100% current control.

"In the rapidly growing solid state lighting sector, there is a need for low cost driver electronics to supply constant current output to high brightness, high power LEDs. The new IRS2980 LEDrivIR IC offers improved performance at a lower system cost than alternative solutions for non-isolated LED driver applications," said Peter Green, LED Group Manager, IR's Energy Saving Products Business Unit.

Available in an SO-8 package, the IRS2980 utilizes IR's advanced high-voltage IC process, which incorporates latest-generation high-voltage level-shifting and termination technology.

Specifications Part Number Package Voltage VTH Io Max Frequency
IRS2980SPBF SO8 600 V 0.5V +/- 80/260mA 150kHz


Availability and Pricing: Pricing for the IRS2980 begins at US $0.60 each in quantities of 10,000-units. The IRPLLED7 costs US $99 per kit. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.