General Description 

The VAS1220 is a constant current synchronous step-down controller for accurately regulating output current up to 15A; VAS1220 adopts a 50mV low voltage sense topology to minimize system power dissipation and provides an excellent solution for HB-LED drivers. The device operates from a 7V to 60V input range and the average current-mode controller 

will maintain inductor current regulation over a wide output voltage of up to (VIN-2V). Its novel control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The device integrates UVLO and thermal shutdown, and is available in TSSOP14.