SLUSFE0 august 2023 TPSM843B22E
PRODUCTION DATA
The output voltage is set with a resistor divider created by RFBT and RFBB from the output node to the FB pin. Use 1% tolerance or better resistors. For this example design, 4.99 kΩ was selected for RFBB. Using Equation 24, RFBT is calculated as 4.99 kΩ. This resistor is a standard 1% resistor.
If the PCB layout does not use the recommended AGND to PGND connection in Section 8.4.1, noise on the feedback pin can degrade the output voltage regulation at maximum load. Using a smaller RFBB of 1.00 kΩ minimizes the impact of this noise.