SLUSBH2G March 2013 – March 2019
To set the proper output regulation voltage and input voltage power good comparator, the external resistors must be carefully selected.
The OUT regulation voltage is then given by Equation 5:
Note that VBIAS is nominally 1.21 V per the electrical specification table. The sum of the resistors is recommended to be no greater than 13 MΩ , that is, ROUT1 + ROUT2 = 13 MΩ. Higher resistors may result in poor output voltage regulation and/or input voltage power good threshold accuracies due to noise pickup via the high impedance pins or reduction of effective resistance due to parasitic resistances created from board assembly residue. See Layout Considerations section for more details. SLUC484 provides help on sizing and selecting the resistors.