SLVSEI2A November 2018 – May 2019 TPS56339
PRODUCTION DATA.
The output voltage is set with a resistor divider from the output node to the FB pin. TI recommends using 1% tolerance or better divider resistors. Referring to the application schematic of Figure 17, start with a 10 kΩ for R7 and use Equation 9 to calculate R6. To improve efficiency at light loads consider using larger value resistors. If the values are too high the regulator is more susceptible to noise and voltage errors from the FB input current are noticeable.
Table 2 shows the recommended components value for common output voltages.