SLVSET8A May 2019 – August 2019 TPS2596
PRODUCTION DATA.
The TPS25963x variants provide an user adjustable 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 OVLO pin. Whenever the voltage at the OVLO pin rises above a threshold VOVLO(R), the device turns OFF the FET. When the voltage at the OVLO pin falls below the threshold VOVLO(F), the FET is turned ON again. The rising and falling thresholds on this pin are slightly different, thereby providing some hysteresis and ensuring stable operation around the threshold voltage.
The user should choose the resistor divider values appropriately to map the desired input overvoltage level to the OVLO threshold of the part.