NCL30185/6/8 Controllers for LED Lighting

NCL30185/6/8 Controllers for LED Lighting

ON Semiconductors' NCL3018x family of power-factor-corrected, primary-side current-mode controllers provide flexible and efficient solutions for low and medium power, LED lighting applications. The family provides flexible dimming solutions that include step dimming, for situations where TRIAC dimming is not available, as well as analog/PWM smart dimming. With ON Semiconductor’s step dimming solutions, any LED lamp can be made dimmable with a standard wall switch. A precise, primary-side control algorithm enables accurate current regulation without the need for secondary side components such as feedback circuitry, biasing, and an optocoupler.

The NCL30185 is an AC-DC, power-factor-corrected flyback controller targeting isolated and non-isolated, buck-boost/SEPIC, constant-current LED drivers. The controller operates in a quasi-resonant mode to provide optimal efficiency. A robust suite of safety protection is built in to simplify the design. This controller has integrated, three-step log dimming which allows an LED bulb or luminaire to be dimming from a standard wall switch. In addition to steps of 70% and 25% which are similar to a traditional three-way lamp, one additional step of 5% current is included to support deep dimming applications.

Features and Benefits
  • Constant-current control with primary side feedback
  • No need for binning of LEDs or production trimming for accuracy
  • Three dimmable steps of 70%, 25%, and 5% of full current
  • Line feedforward for enhanced regulation accuracy
  • Wide VCC operating range
  • User programmable thermal foldback
  • Output LED open and short protection
  • Secondary diode short protection
  • VCC under-voltage and over-voltage protection
  • Exceeds industry requirements for lighting
  • Energy-saving dimming with standard wall switch
  • Supports accurate regulation for universal mains applications
  • Simplifies support for a broad range of LED forward voltages with one magnetic design
  • Protects LED driver from overheating in severe situations
  • Robust fault handling of common LED system faults
  • Avoids overheating in fault condition
  • Supports outdoor and high temperature environments
  • Wide temperature range of -40°C to 125°C
Applications
  • Integrated LED driver electronics
  • LED lighting

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. 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 and Benefits
  • 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 under-voltage and over-voltage protection
  • No optocoupler or secondary control circuitry required
  • Exceeds industry needs for lighting
  • No need for binning of LEDs or production trimming
  • Improve regulation across 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
Applications
  • Integrated LED drive electronics
  • LED drivers
  • Open-frame LED drivers

The NCL30188 is an AC-DC, power-factor-corrected flyback controller targeting isolated and non−isolated, buck-boost/SEPIC, constant-current LED drivers. The controller operates in a quasi-resonant mode to provide optimal efficiency. A robust suite of safety protection is built in to simplify the design. This device is specifically intended for very compact, space-efficient designs.

Features and Benefits
  • Constant-current control with primary-side feedback
  • Precise current-regulation accuracy
  • Power-factor correction with low harmonic distortion
  • Line feedforward for enhanced regulation accuracy
  • Wide VCC operating range
  • User-programmable thermal foldback
  • Latched and auto-recoverable versions
  • Secondary diode short protection
  • VCC under-voltage and over-voltage protection
  • Open and shorted LED protection
  • No Optocoupler or secondary control circuitry required
  • No need for binning of LEDs or production trimming for accuracy
  • Exceeds industry requirements for lighting
  • Supports universal mains applications
  • Simplifies support for a range of LED forward voltages
  • Protects LED driver from overheating in severe situations
  • Flexiblity for fault handling
  • Avoids overheating in fault condition
  • Robust fault handling of common LED system faults
Applications
  • Integral LED bulbs
  • Integrated LED drive electronics
  • LED light engines
  • LED driver power supplies
Manufacturer