Typical Application Analog Dimming in Buck Configuration for RT8452 High Voltage High Current LED Driver Controller for Buck-Boost or Buck-Boost Topology

Typical Application Analog Dimming in Buck Configuration for RT8452 High Voltage High Current LED Driver Controller for Buck-Boost or Buck-Boost Topology. The RT8452 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor. With the maximum operating input voltage of 36V and output voltage up to 48V, the RT8452 is ideal for Buck, Boost or Buck-Boost operation