Dimmable LED controller IC
SSL2129AT
Dimmable LED driver IC
Rev. 4 — 3 October 2013
Product data sheet
1. General description
The SSL2129AT is a ...
Description
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...
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