RT8458 pdf(High Efficiency PWM Buck LED Driver Controller)

The RT8458 is a PWM controller with an integrated high

side floaTIng gate driver. It is used for step down converters

by well controlling the external MOSFET and regulaTIng a

constant output current. The output duty cycle of the

RT8458 can be up to 100% for wider input voltage

applicaTIon, such as E27 and PAR30 off-line LED lighTIng

products.