RT8482
RT8482 is High Voltage High Current LED Driver Controller manufactured by Richtek.
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High Voltage High Current LED Driver Controller for Buck Boost, or Buck-Boost Topology
General Description
The RT8482 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 a maximum operating input voltage of 36V and output voltage up to 48V, the RT8482 is ideal for Buck, Boost or Buck-Boost operation.
With 350kHz operating frequency, the external inductor and capacitors can be small while maintaining high efficiency.
Dimming can be either analog or PWM digital. The unique built-in clamping parator...
