SSL2103 Datasheet, PDF (1/21 Pages) NXP Semiconductors – SMPS controller IC for dimmable LED lighting

SSL2103
SMPS controller IC for dimmable LED lighting
Rev. 2 — 25 November 2010
Product data sheet
1. General description
SSL2103 is a Switched Mode Power Supply (SMPS) controller IC designed for LED
lighting applications. It is an extension of the NXP SSL2101/SSL2102 product platform,
allowing easy design of derivative applications.
When used in combination with a phase cut dimmer connected directly to a rectified
mains, it provides dimmability to the application.
In dimmer applications, 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 permitting the:
– control of an external power switch to allow the IC to provide any power
– control of external bleeder transistors to provide extended dimmer interoperability
The device includes a circuit that allows start-up directly from the rectified mains voltage.
2. Features and benefits
 Easy migration to existing lighting control infrastructures, TRIAC and transistor
dimmers
 Compatible with most dimming solutions
 Optimized efficiency with valley switching managed by built-in circuitry
 Built-in demagnetization detection
 Built-in OverTemperature Protection (OTP)
 Short-Winding Protection (SWP) and OverCurrent Protection (OCP)
 Internal V_CC generation allowing start-up from rectified mains voltage
 Natural dimming curve by logarithmic correction, optimized for human eye response,
down to 1 %
3. Applications
The SSL2103 is suitable for various power requirements including:
 Retro-fit lamps
 LED modules such as LED spots and down-lights
 LED strings suitable for retail displays etc.