DESCRIPTION

· The LT3798 is an isolated flyback controller with active power factor correction (PFC) that does not require an opto-coupler for output voltage feedback.

· It integrates constant-voltage and constant-current regulation into a single-stage converter.

· Suitable for a wide range of off-line applications, with input and output ranges adjustable via external components.

· Achieves efficiencies over 86% for output power levels up to 100W.

FEATURES

· Active Power Factor Correction with a power factor greater than 0.97.

· Low harmonic distortion, compliant with most Harmonic Current Emission requirements.

· No opto-coupler required, simplifying the design and reducing costs.

· Accurate regulated voltage and current (±5% typical).

· Energy Star compliant, with less than 0.5W no-load operation.

· Available in a thermally enhanced 16-lead MSOP package.

APPLICATIONS

· Offline applications ranging from 5W to over 100W.

· High DC input isolated applications.

· Offline bus converters with outputs of 12V, 24V, or 48V.