SLVSE57C June 2017 – April 2018 TPS2595
The TPS259573 device provides an user programmable OVLO mechanism to ensure that the supply to the load is cut off if the input supply voltage exceeds a certain level. This can be achieved by dividing the input supply and feeding it to the EN/OVLO pin. Whenever the voltage at the EN/OVLO pin rises above a threshold VOVLO, the device turns OFF the FET. When the voltage at the EN/OVLO pin falls below the threshold, the FET is turned ON again.
The user should choose the resistor divider values appropriately to map the desired input overvoltage level to the OVLO threshold of the part.