Diodes Inc AL8820 LED driver is optimized for MR16/AR111 and other similar LED lamp applications. The LED driver is compatible with many commonly used electronic transformers and meets high power factor (PF) and low total harmonic distortion (THD) requirements for these applications. The AL8820 integrates two DC/DC converters. This design offers superior performance for MR16/AR111 applications. Stage 1 is a boost PFC stage which improves PF, reduces EMI, powers the Buck stage, and the compatibility of electronic transformers. The buck stage regulates the LED current through the setting of an external sense resistor. The low on-resistance of the integrated MOSFETs reduces the conduction power loss.