1.

General description

The SSL2108X is a range of high-voltage Integrated Circuits (ICs), intended to drive LED

lamps in general lighting applications.

The main benefits of the product family are:

The product family is made of ICs with a range of internal HV switches for easy power

scaling.

The ICs work as boundary conduction mode converters, typically in buck configuration.

The IC range has been designed to start up directly from the HV supply by an internal

high-voltage current source. Thereafter, the dV/dt supply is used with capacitive coupling

from the drain, or any other auxiliary supply. This functionality provides full flexibility in the

application design. The IC consumes 1.3 mA of supply current with an internal clamp

limiting the supply voltage.

The ICs provide accurate output current control with LED current accuracy within 5%. The

ICs can be operated using Pulse-Width Modulation (PWM) dimming and has many

protection features including easy LED temperature feedback.

2.

Features and benefits

SSL21084) power switches

SSL21081T/2T/3T/4T

GreenChip drivers for LED lighting

Rev. 2 — 6 December 2011

Preliminary data sheet