LT3798

FEATURES n Isolated PFC Flyback with Minimum Number of External Components n VIN and VOUT Limited Only by External Components n Active Power Factor Correction n Low Harmonic Distortion n No Opto-Coupler Required n Constant-Current and Constant-Voltage Regulation n Accurate Regulated Voltage and Current (±5% Typical) n Energy Star Compliant (<0.5W No Load Operation) n Thermally Enhanced 16-lead MSOP Package APPLICATIONS n Offline 5W to 100W+ Applications n High DC VIN Isolated Applications n Offline Bus Converter (12V, 24V or 48V Outputs) LT3798 Isolated No Opto-Coupler Flyback Controller with Active PFC DESCRIPTION The LT®3798 is a constant-voltage/constant-current isolated flyback controller that combines active power factor correction (PFC) with no opto-coupler required for output voltage feedback into a single-stage converter. A LT3798 based design can achieve a power factor of greater than 0.97 by actively modulating the input current, allowing compliance with most H...