SNVSAB6B March 2017 – July 2018 LP8863-Q1
PRODUCTION DATA.
The RSENSE resistor determines the boost overcurrent limit and is sensed every boost switching cycle. A high-power 20-mΩ resistor can be used for sensing the boost SW current and setting maximum current limit at 10 A (typical). RSENSE can be increased to lower this limit and can be calculated with Equation 13, but this should be done carefully because it may also affect stability. Boost overcurrent limit must not be set below 4 A, therefore RSENSE must not exceed 50 mΩ. Power rating can be calculated from the inductor current and sense resistor resistance value.
where