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NCL30081 - Dimmable Quasi-Resonant Primary Side Current-Mode Controller

Datasheet Summary

Description

Pin No Pin Name Function 1 ZCD Zero Crossing Detection 2 GND 3 CS Current sense 4 DRV Driver output 5 VCC Supplies the controller 6 VIN Input voltage sensing Brown

Connected to the auxiliary winding, this pin detects the core reset event.

Features

  • Quasi.
  • resonant Peak Current.
  • mode Control Operation.
  • Primary Side Sensing (no optocoupler needed).
  • Wide VCC Range.
  • Precise LED Constant Current Regulation ±1% Typical.
  • Line Feed.
  • forward for Enhanced Regulation Accuracy AAxAYWG G 1 AAx = Specific Device Code x = G or H A = Assembly Location.
  • Low LED Current Ripple.
  • 250 mV ±2% Guaranteed Voltage Reference for Current Regulation.
  • ~ 0.9 Power Factor wi.

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Datasheet preview – NCL30081

Datasheet Details

Part number NCL30081
Manufacturer ON Semiconductor
File Size 264.57 KB
Description Dimmable Quasi-Resonant Primary Side Current-Mode Controller
Datasheet download datasheet NCL30081 Datasheet
Additional preview pages of the NCL30081 datasheet.

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Full PDF Text Transcription

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NCL30081 Dimmable Quasi-Resonant Primary Side Current-Mode Controller for LED Lighting The NCL30081 is a PWM current mode controller targeting isolated flyback and non−isolated constant current topologies. The controller operates in a quasi−resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to precisely regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This device is specifically intended for very compact space efficient designs.
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