Allegro MicroSystems A6214 and A6216 Evaluation Kits are used to evaluate the A6214 and A6216 Dimmable Buck Regulator LEDs. The Allegro MicroSystems A6214 is a single-IC switching regulator that provides constant-current output to drive high-power LEDs. The A6216 has the added capability to generate its PWM dimming frequency and duty cycle in stand-alone mode.