SNVSBD3B August 2020 – May 2024 LP8864S-Q1
PRODUCTION DATA
The maximum output LED current is set by an external resistor value. For the application only using external resistor RISET to set the maximum LED current for each string, the Equation 14 is used to calculate the current setting of all strings:
The LEDx_CURRENT[11:0] registers can also be used to adjust strings current down from this maximum. The default value for LEDx_CURRENT[11:0] registers is the maximum 0xFFF(4095). Equation 15 is used to calculate the current setting of an individual string:
For high accuracy of LED current, the ILED current is recommended to set in range from 30mA to 200mA. So the RISET value is in the range from 15.6kΩ to 104kΩ.