OC5220B is a multi-function average current type LED constant current driver with simple peripheral circuits, suitable for step-down BUCK high-power dimming constant current LED fields in the voltage range of 5-100V.
The OC5220B’s PWM port supports ultra-small duty cycle PWM dimming and responds to pulse widths as low as 60ns. When the PWM port is high, the chip works normally. When the chip is low, the chip output is turned off.
OC5220B The average current control algorithm is adopted, the output current constant current accuracy is ≤+3%, and the output current is less affected by the input and output voltage and system inductance; The chip integrates loop compensation, the peripheral circuit is simple, and the system is more stable and reliable.
OC5220B Three-function switching is achieved by controlling the ID port. When the ID is in the air, the system is in highlighted mode; When ID is VDD, the system is in low-light mode with 1/2 current; ID When connected to 0.2-1.2V analog dimming signal input, the system is analog dimming mode. LD switching mode is used to switch between high and low beams for automotive LED lighting. When LD is in analog dimming mode, the port voltage is below 0.2V and the output is off.
OC5220B is available in a SOP8 package.

Fields of application
Landscape lighting wall washers
Stage dimming effect lights
High-end automotive lighting
LCD backlighting
Architectural lighting