Digi-Key – Offline LED driver-controller operates directly off rectified mains voltage (AL9910S-13)Nov 7 2011 - Power [More Power Articles]
Now available from Digi-Key, the AL9910 is Diodes Incorporated’s first offline LED driver-controller and operates directly off the rectified mains voltage.
The AL9910 includes an internal voltage regulator that powers the internal circuitry and gate driver for the external high voltage MOSFET power switch. Two variants are available that match the voltage regulator’s output to the gate drive voltage of the external MOSFET.
The AL9910’s maximum input voltage is 500V, which improves its ability to withstand higher voltage transients in lamps powered from 230VAC mains voltages and other high voltage rails. The number of LEDs is determined by the input voltage while the LED current that can be driven is determined by the external MOSFET’s current rating.
The AL9910 is available in a standard SO-8 package as well as the thermally enhanced SO-8EP package. The SO-8EP enables it to operate at higher temperatures and input voltages than competing devices. The AL9910 also incorporates over-temperature protection (OTP) further increasing system reliability.
Typical applications include DC-DC or AC-DC LED drivers, RGB backlighting LED drivers, backlighting of flat panel displays, general-purpose constant-current source, signage and decorative LED lighting, says the company.More news from Digikey