关于TPS61252的应用demo电路

TPS61252的技术手册中有下列描述：

11.2.2.1 Output Voltage Setting
The output voltage is calculated by Equation 5:
(5)
To minimize the current through the feedback divider network, R2 should be between 180 kΩ and 360 kΩ. The
sum of R1 and R2 should not exceed ~1 MΩ, to keep the network robust against noise. For the example, R1 is
768 kΩ and R2 is 243 kΩ.

R1+R2<1M 但是demo电路取的768和243，两者的和超过了1M啊，该以哪个为准？