The HL5095 is a slew-rate controlled, low Rds(on) over-voltage protection device. It is used in between a power source and a load to protect and isolate power source against unwanted abnormal voltage and current condition. Especially, in the OTG mode of smartphones, the HL5095 could be placed between OTG boost regulator and USB port. The HL5095 can protect boost regulator from over-voltage or over-current USB conditions in smartphones.