KP1063SP is a highly integrated non-isolated buck Active PFC offline LED power switch IC designed for constant-current LED lighting applications.
The device operates using Quasi-Resonant (QR) Buck topology with Active Power Factor Correction (APFC) to achieve high power factor, low harmonic distortion, and improved efficiency. It integrates a 650V high-voltage MOSFET, high-voltage startup circuit, and internal power supply circuit, reducing external component requirements and simplifying LED driver design.
KP1063SP provides high-precision constant-current control by sensing the inductor current throughout the switching cycle. It includes complete protection functions such as LED open/short protection, over-voltage protection, cycle-by-cycle current limiting, thermal protection, and UVLO for reliable operation.
It is mainly used in high-efficiency LED lighting applications such as LED bulbs, ceiling lights, and T5/T8 LED tube lights.
