® RT8494 High Voltage High Current LED Driver Controller for Buck, Boost or Buck-Boost Topology General Description The RT8494 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 90V, the RT8494 is ideal for Buck, Boost or Buck-Boost operation.
With the switching frequency programmable over 100kHz to 1MHz, the external inductor and capacitors can be small while maintaining high efficiency.
Dimming can be done by either analog or digital.
The b...

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