SLVSEK5A August 2018 – October 2018 TPS7B70-Q1
PRODUCTION DATA.
The power-good threshold is set by connecting PGADJ to GND, or by connecting PGADJ to a resistor divider from OUT to GND. The Adjustable Power-Good Threshold (PG, PGADJ) section provides the method to setup the power-good threshold. Rearranging Equation 1 yields Equation 3, and solves the values of R1 and R2 that are needed to get the 95% falling threshold. In this design, R2 is a 10-kΩ resistor. Solving Equation 3 for R1 gives a value of 33.18 kΩ. This value is not a standard 1% resistor value, so a 31.6-kΩ resistor is chosen for R1.