LGS63032 boost type DC-DC LED driver chip, input and output voltage range: 3V~60V; output current 400mA up to 94% boost efficiency, and has a soft-start, adjustable output over-voltage protection, thermal shutdown, UVLO under-voltage lockout, cycle-by-cycle peak current limiting protection. Support digital input (100HZ~100KHZ) PWM linear dimming, high-frequency PWM input without screen flicker.