SLVSDT1C July 2017 – June 2020 TPSM82480
A resistive divider (VOUT to FB to AGND) sets the output voltage of the TPSM82480. Providing a logic High level at the VSEL pin, the RS pin is pulled to ground, so that a resistor, between FB and RS pins is connected in parallel to the lower resistor of the divider. This sets a different higher output voltage and can be used for dynamic voltage scaling (see Setting VOUT2 Using the VSEL Feature).
If the VSEL pin is set Low, the device connects an internal pull down resistor to the pin, keeping the internal logic level Low, even if the pin is floating afterwards. The device disconnects the resistor, if the pin is set to High.