NCL30186: AC-DC Power Factor Corrected Quasi-Resonant Primary Side Current Mode Controller for LED Lighting with Smart Analog/Dimming Capability

The NCL30186 is an AC-DC power factor corrected flyback controller targeting isolated and non−isolated “Smart−dimmable” constant current LED drivers. The controller operates in a quasi−resonant mode to provide optimal efficiency. The current control algorithm supports flyback, buck−boost, and SEPIC topologies. Thanks to a novel control method, the device is able to tightly 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 and supports analog and PWM dimming with a dedicated dimming input intended to control the average LED current. To ensure reliable operation at elevated temperatures, a user configurable current foldback circuit is also provided. The NCL30086 is housed in the SOIC10 which has the same body size as a standard SOIC8.

Features
  • Constant Current Control with Primary Side Feedback
  • Power factor correction with low harmonic distortion
  • Precise Current Regulation Accuracy
  • Line feedforward for enhanced regulation accuracy
  • Wide Vcc operating range
  • User Programmable Thermal Foldback
  • Open and Shorted LED/Output Diode Protection
  • Wide temperature range of -40 to 125 °C
  • Dedicated Analog/Digital Dimming control
  • VCC Undervoltage and overvoltage protection
Benefits
  • No Optocoupler or secondary control circuitry required
  • Exceeds industry needs for lighting
  • No need for binning of LEDs or production trimming
  • Improve regulation acrross line variation
  • Supports wide range of LED forward voltages
  • Protects LED driver from overheating under severe conditions
  • Enhanced fault handling
  • Supports outdoor and high temperature environments
  • Enables smart lighting applications
  • VCC Undervoltage and overvoltage protection
Applications
  • Integrated LED Drive Electronics
  • LED Driver
  • Open Frame LED Driver
End Products
  • LED Bulbs and Tubes
  • LED Lighting Engines
  • Electronic Control Gear for LED System
Application Notes (1)
Document TitleDocument ID/SizeRevisionRevision Date
4 Key Steps to Design a NCL30188-Controlled LED DriverAND9451/D (674kB)0Jun, 2016
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-10 NB751BQ (56.7kB)B
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Analog/Digital Dimmable Power Factor Corrected Quasi-Resonant ControllerNCL30186/D (375kB)1May, 2016
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCL30186ADR2GActivePb-free Halide freeSOIC-10 NB751BQ1Tape and Reel2500$0.4787
NCL30186BDR2GActivePb-free Halide freeSOIC-10 NB751BQ1Tape and Reel2500$0.4787
NCL30186DDR2GActivePb-free Halide freeSOIC-10 NB751BQ1Tape and Reel2500$0.4787
Specifications
ProductTopologyVI Min (V)VI Max (V)VO Max (V)IO Max (mA)fSW Typ (kHz)
NCL30186ADR2GStep-Up/Step-Down9.4262003000Up to 150
NCL30186BDR2GStep-Up/Step-Down9.4262003000Up to 150
NCL30186DDR2GStep-Up/Step-Down9.4262003000Up to 150
Analog/Digital Dimmable Power Factor Corrected Quasi-Resonant Controller (375kB) NCL30186
4 Key Steps to Design a NCL30188-Controlled LED Driver NCL30188
SOIC-10 NB LA4537MC