SSL2101

SSL2101 SMPS IC for dimmable LED lighting Rev. 04 — 28 August 2009 Product data sheet 1. General description The SSL2101 is a Switched Mode Power Supply (SMPS) controller 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 and a circuit to allow start-up directly from the rectified mains voltage. Furthermore the device includes high-voltage circuitry to supply the phase cut dimmer. For dimmer applications, integrated dedicated circuitry optimizes the dimming curve. 2. Features I I I I I I I I Easy migration to existing lighting control infrastructure, triac and transistor dimmers Supports majority of available dimming solutions Valley switching efficiency is optimized by built-in dedicated circuitry Built-in demagnetization detection The IC has built-in OverTemperature Protection (OTP) Short-Winding Protection (SWP) and OverCurrent Protection (OCP) The IC has internal VCC generation that allows start-up from rectified mains voltage Natural dimming curve by logarithmic correction 3. Applications The SSL2101 is suitable for different power requirements, these include: I Retro-fit lamps, e.g. GU10, up to a maximum of 10 W I LED modules, separate power supplies, e.g. LED spots, down-lights, up to a maximum of 15 W I LED strings, e.g. retail display, up to a maximum of 15 W I Mains isolated LED drivers up to 10 W to 15 W (flyback topology) I Non mains isolate LED dr...