SSL2129AT

SSL2129AT Dimmable LED driver IC Rev. 4 — 3 October 2013 Product data sheet 1. General description The SSL2129AT is a high-voltage Integrated Circuit (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) Ease of integration and many protection features Low electronic Bill Of Material (BOM) Mains phase-cut dimmable using external components Highly flexible IC for use in buck, buck/boost and flyback modes Single inductor used for non-isolated configurations because of internal demagnetization detection The IC range has been designed to start up directly from the HV supply using an internal high-voltage current source. An internal clamp limits the supply voltage. 2. Features and benefits  LED driver IC for driving strings of LEDs or high-voltage LED modules from a rectified mains supply  Driver provides power-efficient boundary conduction mode of operation with:  No reverse recovery losses in freewheel diode  Zero-Current Switching (ZCS) for switch turn-on  Zero-voltage or valley switching for switch turn-off  Minimal required inductance value and size  Fast transient response through cycle-by-cycle current control:  No over or undershoots in the LED current  Simple high input power factor solution (>0.9)  Internal Protection features:  UnderVol...