The SSL2109 series is a range of high-voltage Integrated Circuits (IC) for driving LED lamps in general lighting applications.The main benefits of this IC include:• Small Printed-Circuit Board (PCB) footprint and compact solution• High efficiency (up to 95 %) for non-dimmable high power factor solutions• High power factor >0.9 (application dependent)• Ease of integration and many protection features• Low electronic Bill Of Material (BOM)• Highly flexible IC for use in buck, buck/boost and flyback modes• Single inductor used for non-isolated configurations because of internaldemagnetization detection and dV/dt supplyThe IC is supplementary to the SSL21081/SSL21083 series but without an internal switch.The IC range has been designed to start up directly from the HV supply by an internal high-voltage current source. Thereafter, the dV/dt supply is used with capacitive coupling from the drain, or any other auxiliary supply. This functionality provides full flexibility in the application design. An internal clamp limits the supply voltage.The IC provides accurate output current control to within 5 % LED current accuracy. The IC can be operated using Pulse-Width Modulation (PWM) current regulation and has many protection features including easy LED temperature feedback.
- LED controller IC for driving strings of LEDs or high-voltage LED modules from a