SLVSE57C June 2017 – April 2018 TPS2595
The load current is monitored during start-up and normal operation. When the load current exceeds the current limit trip point ILIMIT programmed by RILM resistor, the device regulates the current to the set limit ILIMIT within tLIM. The device exits current limiting when the load current falls below limit. Equation 4 can be used to find the RILM value for a desired current limit.
In the current limiting state, the output voltage drops resulting in increased power dissipation in the internal FET leading to a thermal shutdown if the condition persists for an extended period of time. In this case, the device either stays latched-off or starts an auto retry cycle as explained in the Overtemperature Protection (OTP) section.