The voltage at CFB is compared internally against the bandgap voltage (1.23V) if the voltage drops below the bandgap the CFB voltage is used instead in the current setting control circuitry.
So the…
R1EN and R2EN serve as the voltage divider to program the supply input UVLO threshold using the following formula R1_EN =(V_ON/V_UVLOIN-1)*R2_EN, where VUVLOIN is the EN rising threshold (1.24V) and VON…
On page 14 datasheet, there is the description about setting OVP level. "Do not set the OVP level higher than 3V above the maximum LED operating voltage. This is only required if your DIM signal crosses…
