1.

General description

The SSL21081AT is a high-voltage Integrated Circuit (IC) for driving LED lamps in general

mains non-dimmable lighting applications.

The main benefits are:

The IC incorporates a 300 V MOSFET.

The IC works as boundary conduction mode converters, typically in buck configuration. It

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 function 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 IC provides accurate output current control with LED current accuracy within 5 %. It

can be operated using Pulse-Width Modulation (PWM) current regulation. It includes

many protection features including easy LED temperature feedback.

2.

Features and benefits

SSL21081AT

Compact non-dimmable LED driver IC

Rev. 6 — 3 October 2013

Product data sheet