
SSL2103
Dimmable Greenchip controller for LED lighting
Rev. 2.2 — 5 December 2011
Product data sheet
1. General description
The SSL2103 is a Switched Mode Power Supply (SMPS) controller IC that operates in
combination with a phase cut dimmer directly from the rectified mains. It is designed to
drive LED devices. The device includes a circuit to allow direct start-up from the rectified
mains voltage.
For dimmer applications, an 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 to:
– Use an external power switch to allow the IC to provide any power
– Use an external bleeder transistors to provide extended dimmer interoperability
2. Features and benefits
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Easy migration to existing lighting control infrastructure
Supports most available dimming solutions
Optimized efficiency with valley switching managed by a built-in circuitry
Demagnetization detection
OverTemperature Protection (OTP)
Short-Winding Protection (SWP) and OverCurrent Protection (OCP)
Internal V CC generation allowing start-up from the rectified mains voltage
Natural dimming curve by logarithmic correction, down to 1 %
Suitable for flyback and buck applications
3. Applications
? SSL applications with various power requirements
? LED modules such as LED spots and down-lights
? LED strings suitable for retail displays, etc.