Products, Materials & Tools | Jan 28, 2011

Diodes Incorporated's High Brightness LED Driver Supports Off-Line Illumination

Diodes Incorporated, a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic and analog semiconductor markets, today announced the release of the AL9910. Provided in standard SO-8 and high power dissipation exposed pad SO-8 packages, the AL9910 high brightness LED driver will support universal AC input voltages from 85V to as high as 265V. For interior and exterior off-line lighting products, the exposed pad SO-8 variant in particular helps significantly increase device reliability by minimizing temperature rise. The AL9910 utilizes a rugged high voltage process technology allowing it to withstand input voltage surges of up to 500V. System reliability is further improved by the device's built-in over-temperature protection.

Driving LED arrays with a constant current to better control LED brightness, lighting spectrum and lifetime expectancy, the AL9910 delivers an output of between a few milliamps and 1A via an external MOSFET operating at a resistor programmable switching frequency up to 300kHz. Removing the need for a start-up resistor, a built-in voltage regulator delivers a gate drive to match and protect the switching MOSFET: 7.5V for the AL9910 and 10V for the companion AL9910A.

Applications:
• DC/DC or AC/DC LED Driver application
• RGB Backlighting LED Driver
• Back Lighting of Flat Panel Displays
• General purpose constant current source
• Signage and Decorative LED Lighting

Features:
• >90% Efficiency
• Universal rectified 85 to 265VAC input range
• Input voltage surge ratings up to 500V
• Internal voltage regulator removes start-up resistor
  o 7.5V MOSFET drive – AL9910
  o 10V MOSFET drive – AL9910A
• Drives LED Lamps from a few mA to more than 1A
• PWM Low-Frequency Dimming via Enable pin
• Internal Thermal Protection (OTP)
• SO-8 and SO-8EP in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)

To extend device flexibility, the high efficiency AL9910 offers two separate dimming inputs for LED brightness control: a linear dimming input controlled by the application of a dc control voltage, and a low frequency PWM dimming input that accepts an external TTL compatible control signal with a duty ratio of 0-100% and at a frequency of up to a few kHz. For more information, visit the Company's website at www.diodes.com/.

About Diodes Incorporated.
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor's SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors; power management devices, including LED drivers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. The Company's corporate headquarters, logistics center, and Americas' sales office are located in Dallas, Texas. Design, marketing, and engineering centers are located in Dallas; San Jose, California; Taipei, Taiwan; Manchester, England; and Neuhaus, Germany. The Company's wafer fabrication facilities are located in Kansas City, Missouri and Manchester, with two manufacturing facilities located in Shanghai, China, another in Neuhaus, and a joint venture facility located in Chengdu, China. Additional engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; and Munich, Germany; with support offices located throughout the world. For further information, including SEC filings, visit the Company's website at www.diodes.com/.

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