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RT8482

Part Number	RT8482
Manufacturer	Richtek
Description	High Voltage High Current LED Driver Controller
Published	Jan 24, 2015
Detailed Description	® RT8482 High Voltage High Current LED Driver Controller for Buck Boost, or Buck-Boost Topology General Description Th...
Datasheet	RT8482 PDF File

Overview

® RT8482 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 comparator a...

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