EDNE May 2012 - (Page 3)

LEDrivIR™ High-Voltage Buck Control ICs for Constant LED Current Regulation EMI Filter Line Rectifier IC and Switches LEDs IRPLLED7 Demo Board IC IRS2980 Features • Internal high voltage regulator • Hysteretic current control • High side current sensing • PWM dimming with analog or PWM control input • Free running frequency with maximum limiting (150kHz) IRS2980 Benefits • Low component count • Off-line operation • Very simple design • Inherent stability • Inherent short circuit protection Demo Board Specifications • Input Voltage 70V to 250V (AC) • Output Voltage 0V to 50V (DC) • Regulated Output Current: 350mA • Power Factor > 0.9 • Low component count • Dimmable 0 to 100% • Non-isolated Buck regulator IRPLLED7 Demo Board LED Current vs Input Voltage 390 380 Current (mA) 370 360 350 340 330 LED Current (mA) LEDrivIR™ IRS2980 320 310 Part Number IRS2980S IRS25401S IRS25411S Package SO-8 SO-8 SO-8 Voltage 450V 200V 600V Gate Drive Current +180 / -260 mA +500 / -700 mA +500 / -700 mA For more information call +49 (0) 6102 884 311 or visit us at www.irf.com 60 70 80 90 100 110 120 130 140 150 160 170 180 Input Voltage Startup Current <250 µA <500 µA <500 µA Frequency <150 kHz <500 kHz <500 kHz THE POWER MANAGEMENT LEADER http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com http://www.irf.com

Table of Contents for the Digital Edition of EDNE May 2012

Cover
Contents
International Rectifier
RS Components
Masthead
Comment
International Rectifier
Pulse
Analog Devices
Toshiba
Digi-key
Bergquist
Baker's best
Test & Measurement
Agilent Technologies
Digi-key
Audio-converter-subsystem design challenges in the 21st century
Coilcraft
Silicon Labs
Digi-key
Cover Story
Digi-key
Sensor & Test
Mechatronics in design
Vicor's insert
Understand and reduce dc/dc-switching-converter ground noise
Power MOSFETs continue to evolve
Design Idea
Product Roundup
Tales from the cube

EDNE May 2012

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