Resistors R₁, R₂ and R₃, R₄ connected from SW pin to ground is used to program the undervoltage and overvoltage threshold. The resistor values required for setting the undervoltage threshold (V_UVLO to 5.5 V) and overvoltage threshold (V_OV to 37.0 V) a are calculated by solving

For minimizing the input current drawn from the battery through resistors R₁, R₂, and R₃, R₄; TI recommends to use higher value of resistance. Using high value resistors adds error in the calculations because the current through the resistors at higher value becomes comparable to the leakage current into the OV pin. Maximum leakage current into the UVLO and OV pin is 0.2 µA and choosing total ladder resistor in 100kΩ range ensures current through resistors is much higher than leakage through the OV pin.

Based on the device electrical characteristics, V_UVLOF is 0.55 V. Select R₁ = 100 kΩ. Solving Equation 12 gives R₂ = 11.5 kΩ. Solving Equation 13 with R3 selected as 100 kΩ and V_OVR = 0.6 V gives R₄ = 1.65 kΩ as standard 1% resistor values closest to the calculated resistor values.

An optional capacitor C_UV can be placed in parallel with R2 on UVLO resistor ladder to filter out any fast undervoltage transients on battery lines to avoid false UVLO trigger.