|Designed for industrial applications, Infineon's ILD4035 is a hysteretic buck LED controller IC that can drive high current, high brightness LEDs up to 350mA. This IC incorporates a wide input voltage range and internal power switch. Its output current level can be adjusted with an external sense resistor. With a multifunctional control pin, the IC can be switched on and off by an external signal that regulates the brightness of the LEDs by PWM or DC dimming as well. The voltage ripple can be set depending on the value of the switching inductor. The precise internal band gap stabilizes the circuit and provides stable current conditions over temperature range. Furthermore, overvoltage protection and a reversible temperature shutdown mechanism (no hardware or software reset necessary) reinforce the IC to protect attached LEDs. Additional features are included to protect the LEDs from overload as well as short circuit events.