Dimmable Greenchip driver for LED lighting

Topology: Other

Original publication on 2009-12-02, revision 1.1


The SSL2102 is a Switched Mode Power Supply (SMPS) driver IC that operates in combination with a phase cut dimmer directly from rectified mains. It is designed to drive LED devices. The device includes a high-voltage power switch, a circuit to allow direct start-up from the rectified mains voltage and a high-voltage circuitry to supply the phase cut dimmer.For dimmer applications, an integrated dedicated circuitry optimizes the dimming curve.• SSL2101: fully integrated LED driver for lamps up to 10 W• SSL2102: fully integrated LED driver for lamps up to 25 W• SSL2103: gives the application designer flexibility to:– Use an external power switch to allow the IC to provide any power– Use external bleeder transistors to provide extended dimmer interoperability


  • Easy migration to existing lighting control infrastructure
  • Supports most available dimming solutions
  • Optimized efficiency with valley switching managed by a built-in circuitry
  • Demagnetization detection
  • OverTemperature Protection (OTP)
  • Short-Winding Protection (SWP) and Over Current Protection (OCP)
  • Internal VCC generation allowing start-up from the rectified mains voltage
  • Natural dimming curve by logarithmic correction, down to 1 %
  • Limited external components required because of the high integration level
  • Thermal enhanced SO20 wide body package
  • Suitable for flyback and buck applications


  Order Code SPEC Product series Z @ 100 MHz
TC Zmax IR
RDC max.
Z @ 25 MHz
74275013 PDF WE-UKW EMI Suppression 6-Hole Ferrite Bead 950 1180 60 MHz 3 20 650 25 6 10

Other applications and Würth Elektronik products for this IC

  • SSL2102
    Topology: Flyback, Input Voltage (min.): 85.00 V, Input Voltage (max.): 276.00 V, Output 1: 23.00 V / 1.050 A
  • SSL2102
    Topology: Flyback, Input Voltage (min.): 0.00 V, Input Voltage (max.): 150.00 V, Output 1: 33.00 V / 0.600 A