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NCL37733 Datasheet LED Lighting Controller

Manufacturer: onsemi

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Overview

Power Factor Corrected Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting Below 25 W NCL37733 The NCL37733 is a compact driver for power−factor corrected flyback and non−isolated buck−boost and SEPIC converters.

The controller operates in a quasi−resonant mode to provide optimal efficiency, and embeds a proprietary control method which allows the LED current to be tightly regulated from the primary side, thus eliminating the need for a secondary−side feedback circuitry and for an optocoupler.

Housed in a TSOP−6 package, the device is highly integrated with a minimum number of external components.

Key Features

  • Quasi.
  • resonant Peak Current.
  • mode Control Operation.
  • Constant Current Control with Primary Side Feedback.
  • Tight LED Constant Current Regulation of ±2% typical.
  • Near.
  • Unity Power Factor (>0.95 typically).
  • Optimized for Line Wide.
  • range.

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