➀ The AL8866Q is an AEC-Q100 (Grade 1) qualified DC-DC converter controller for automotive front lights like headlights. It can implement buck, boost, buck-boost, or SEPIC topologies and operates from 4.7 to 85V. ➁ It offers analog and PWM dimming with a 100:1 range and ±12% output current accuracy at 20% dimming. ➂ It features soft-start, open-drain output for fault indication, and cycle-by-cycle current protection.