The C3183 uses CamSemi’s patented Primary Side Sensing (PSS) and power-saving technologies to boost system performance and energy efficiency.The LED driver IC delivers a power factor of 0.7 without needing a high voltage input electrolytic capacitor.

Use of quasi-resonant switching and other techniques enable operating efficiencies in excess of 90% and C3183 provides current regulation at a new ‘best in class’ level of +/- 3% allowing more margin for thermal design.

The device, which is packaged in SOT23-6, drives an external mosfet enabling one part to be specified across a wider power range.

The driver IC can be configured in isolated and non-isolated designs depending on the specific application requirements.

Other features to further simplify designs and reduce system cost include: switching frequency dither and gate drive edge rate control to reduce EMI and full featured protection to guard against a range of fault conditions such as LED failure, over temperature and output short-circuit protection.