KP1272FNDP is a highly integrated non-isolated Quasi-Resonant (QR) buck LED constant-current driver IC designed for offline LED lighting applications.
The device integrates a 650V high-voltage MOSFET and high-voltage power supply circuit, eliminating the need for external VDD capacitors and simplifying the peripheral design. It uses QR operation with active PFC control to achieve high power factor, low harmonic distortion, high efficiency, and stable LED current regulation.
KP1272FNDP provides accurate constant-current output using internal sampling and control technology. It includes multiple protection functions such as LED open/short protection, output over-voltage protection, cycle-by-cycle current limiting, line over-voltage protection, and thermal fold-back protection.
It is suitable for compact LED bulbs, LED tubes, and other non-isolated LED lighting products requiring high efficiency and reliable constant-current operation.
