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MB39C603 - Phase Dimmable PSR LED Driver IC

General Description

MB39C603 is a Primary Side Regulation (PSR) LED driver IC for LED lighting.

Using the information of the primary peak current and the transformer-energy-zero time, it is able to deliver a well regulated current to the secondary side without using an opto-coupler in an isolated flyback topology.

Key Features

  • PSR topology in an isolated flyback circuit.
  • High power factor (>0.9 : without dimmer) in Single Conversion.
  • High efficiency (>80 % : without dimmer) and low EMI by detecting transformer zero energy.
  • Built-in phase dimmable circuit  Dimming curve based.

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MB39C603 Phase Dimmable PSR LED Driver IC for LED Lighting Description MB39C603 is a Primary Side Regulation (PSR) LED driver IC for LED lighting. Using the information of the primary peak current and the transformer-energy-zero time, it is able to deliver a well regulated current to the secondary side without using an opto-coupler in an isolated flyback topology. Operating in critical conduction mode, a smaller transformer is required. In addition, MB39C603 has a built-in phase dimmable circuit and can constitute flicker less lighting systems for phase dimming with low-component count. It is most suitable for the general lighting applications, for example replacement of commercial and residential incandescent lamps.