IRS2983 LEDriverIR

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IRS2983 LEDriverIR Control IC
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• The IRS2983 control IC for Flyback and Buck-Boost
  topologies is used in LED drivers with optional
  TRIAC dimming requiring minimal extra components.
  The IRS2983 employs primary side regulation for
  fixed LED loads, reducing component count and
  simplifying design by eliminating the
  opto-isolator and other components necessary for
  isolated feedback.

DATASHEET
PRESS RELEASE

• Features
• Flyback LED Driver
• Critical-conduction/transition mode operation
• Maximum frequency limit, discontinuous mode
  operation at light load
• Primary constant power control (primary side
  regulator)
• High Voltage Rapid Startup
• Cycle by cycle over-current protection
• Hiccup mode over voltage protection
• High power factor
• Low THD
• Triac dimming option
• Micropower startup
• Low quiescent current
• Latch immunity and ESD protection
• Noise immunity

• Advantages
• The new IC controller offers high power factor
  and low THD with output current regulation over
  wide input range for fixed load applications.
  Comprehensive protection features include hiccup
  mode over-voltage protection, cycle-by-cycle over
  current protection and open and short circuit
  protection. The device also supports TRIAC
  dimming with a few additional components.
• Traditional incandescent, halogen, and CFL light
  sources are rapidly being replaced by LED bulbs
  and fixtures. The Flyback converter is the
  preferred power-supply topology for a large
  segment of the LED driver market as Flyback LED
  drivers provide an attractive tradeoff between
  cost and performance.

HI-RES GRAPHIC
January 2014