The value of R18 is recommended to be with the range from 25kΩ to 50kΩ.

• R18 = 47kΩ
• Equation 11. $\mathrm{R}17=\left[\left(\frac{\frac{\mathrm{R}15+\mathrm{R}16}{\mathrm{R}16}}{{\mathrm{R}\mathrm{a}\mathrm{t}\mathrm{i}\mathrm{o}}_{\mathrm{V}\mathrm{P}\mathrm{C}\_\mathrm{V}\mathrm{S}\mathrm{C}}\times 1.1}\right)-1\right]\times \mathrm{R}18$
• R17 = 554kΩ

With R17 = 590kΩ the operating range of the VSC pin is:

• Equation 12. ${\mathrm{V}}_{\mathrm{V}\mathrm{S}\mathrm{C}\left(\mathrm{m}\mathrm{i}\mathrm{n}\right)}=\left(\frac{\mathrm{R}18}{\mathrm{R}17+\mathrm{R}18}\right)\times {\mathrm{V}}_{\mathrm{O}\mathrm{U}\mathrm{T}\left(\mathrm{m}\mathrm{i}\mathrm{n}\right)}$
• V_SC(min) = 1.32V
• Equation 13. ${\mathrm{V}}_{\mathrm{V}\mathrm{S}\mathrm{C}\left(\mathrm{m}\mathrm{a}\mathrm{x}\right)}=\left(\frac{\mathrm{R}18}{\mathrm{R}17+\mathrm{R}18}\right)\times {\mathrm{V}}_{\mathrm{O}\mathrm{U}\mathrm{T}\left(\mathrm{m}\mathrm{a}\mathrm{x}\right)}$
• V_SC(max) = 1.55V

Therefore, V_VSC is within the recommended range from 0.3V to 2V.