SLVSDF3F MARCH 2017 – JANUARY 2019 TPSM846C23
The nominal output voltage of the converter can also be adjusted by changing the feedback voltage, VFB, using the VREF_TRIM command. The adjustment range is from –64 × 1.953 mV to +63 × 1.953 mV from the nominal FB voltage. This command adjusts the final output voltage of the converter to a high degree of accuracy without relying on high-precision feedback resistors. The resolution of the adjustment is approximately 1.953 mV. The trim value can be stored to nonvolatile memory using the STORE_DEFAULT_ALL command.