Versions with an internally fixed output voltage allow you to remove the external feedback voltage divider. This not only allows you to reduce the total solution size but also provides higher accuracy as there is no additional error caused by the external resistor divider. The FB pin must be tied to the output voltage directly as shown in Figure 9-57. The application runs with an internally defined switching frequency of 2.25 MHz by connecting COMP/FSET to GND.

Figure 9-57 Schematic for Fixed Output Voltage Versions