Datasheet Summary
Preliminary
High Voltage Boost/SEPIC Controller
General Description
The RT8573 is a current mode PWM controller designed to drive an external MOSFET for high current LED applications. With a low side current sense amplifier threshold of 190mV, the LED current is programmable with one external current sense resistor.
With programmable operating frequency up to 800kHz, the external inductor and capacitors can be small while maintaining high frequency.
Dimming can be done by either analog or digital. A built-in clamping parator and filter allow easy low noise analog dimming conversion from digital signal with only one external capacitor. An unique True PWM dimming control is made...