SNVSA47D February 2016 – December 2022 LM5165
Adjust the undervoltage lockout (UVLO) using an externally-connected resistor divider network of RUV1, RUV2, and RHYS. The UVLO has two thresholds, one for power up when the input voltage is rising and one for power down or brownouts when the input voltage is falling. The EN rising threshold for the LM5165 is 1.212 V.
Rearranging Equation 6 and Equation 7, the expressions to calculate RUV2 and RHYS are as follows:
Choose RUV1 as 10 MΩ to minimize input quiescent current. Given the desired input voltage UVLO thresholds of 16 V and 14.5 V, calculate the resistance of RUV2 and RHYS as 825 kΩ and 37.4 kΩ, respectively. See Section 7.3.7 for more detail.