Dear TI Experts,
I have some doubts about lp8860,and need your suggestion:
1. About LED current, their are two ways to limit the current ,
① . set register 0x66, EN_EXT_LED_CUR_CTRL to 1,LED current is scaled by the RISET resistor
② set register 0x63, DRV_LED_CURRENT_SCALE[2:0]
My question is, if above two ways are all set, which one will the LED current follow?
2. LED_STRING_CONF[2:0] is to set LED current sink configuration, will the phase shift influence the total current?
3.I met with a problem that when the input voltage decrease,the screen will flick(boost OCP occurs),at this moment,I rconfig 0x71 register to disable spread spectrum, it all becomes good,no flicker phenomenon~
I'd like to know the spread spectrum's influence on the OCP when the input voltage decrease