2015-03-02 Exars' Non-isolated HV AC Led drivers


The HV AC LED drivers form Exar are Three Terminal Current Controller (TTCC)
for regulating the current flowing through an LED string. The LED drivers
are configured in parallel with an LED string. It can work as voltage
controlled current source, current regulator, or cut-off. It is suitable for the
applications adopting periodical AC voltage source.

The PCB layout is also very flexible to meet various shape requirements.
It is especially suitable for replacing incandescent light bulb and linear type
fluorescent lamp.

Features are:

  • All solid state components
  • No electrolytic capacitor needed
  • Compact size
  • High Power Factor and Low Total Harmonic Distortion Performance
  • High efficiency
  • Flexible PCB layout style
  • Wide range of LED forward voltage selection



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