Diodes – AP1694: Mains-Dimmable LED Lamp Driver


The AP1694 is an AC-DC controller providing a universal high performance driver solution for a variety of mains-dimmable LED lamp designs. It is suitable for both 120V and 230V AC inputs, and supporting non-isolated buck, buck-boost and isolated flyback topologies. The device uses pulse frequency modulation (PFM) technology to regulate output current while achieving high power factor and low THD. It operates as a BCM (boundary conduction mode) controller which is good for EMI. The AP1694 provides the dimmable LED driver with a wide dimmer compatibility including leading edge and trailing edge dimmer. The AP1694 can achieve deep dimming down to 1%, while the dimming curve is compliant with the standard of NEMA SSL6.


  • Primary side control
  • High PF and low THD
  • Wide range of dimmer compatibility
  • Dynamic base driver control
  • Under-voltage lockout (UVLO)
  • Output short and open protection
  • Boundary conduction mode (BCM)
  • High efficiency without dimmer
  • Dimming curve compliant with NEMA SSL6
  • Valley-mode switching to minimize the┬átransition loss
  • Leading edge blanking (LEB)
  • Over-temperature protection