SLUSDX1 September 2020 TPS563211
If the PG function is selected, the device pulls the PG/SS pin low when the device is shut down by EN, OVP, UVP, UVLO, or thermal shutdown. Connecting PG/SS to VOUT through a resistor can be used to discharge VOUT in those cases (see Figure 7-2). The discharge rate can be adjusted by R3, which is also used to pull up the PG/SS pin in normal operation. The minimum supply voltage required for the discharge function to remain active is typically 2.5 V. For reliability, keep the maximum current into the PG/SS pin less than 1.8 mA. Given an output voltage, the minimum resistance of R3 can be calculated in Equation 11.