iW3623 Datasheet | Dialog Semiconductor

i W3623 AC/DC Digital Power Controller for High Power Factor Dimmable LED Drivers 1 Description The i W3623 is a high-performance AC/DC off-line power supply controller for LED luminaires. The i W3623 bines power factor correction and LED current regulation into one controller. It achieves PF > 0.95 and THD < 10% for 100- 277VAC input voltage range. The i W3623 operates in quasi-resonant mode to provide high efficiency. The device uses Dialog’s advanced Prim Accurate™ primary-side sensing technology to achieve excellent line and load regulation without a secondary-feedback circuit. In addition, the i W3623’s pulse-by-pulse waveform analysis technology allows accurate LED current regulation. The i W3623 maintains stability over all operating conditions without the need for loop pensation ponents. 2 Features - - Isolated AC/DC off-line LED driver - - Power factor > 0.95 for wide input voltage range 100 - 277VAC - - Total harmonic distortion (THD) < 10% - - Under...