Can you answer a question for me about the TPS79801? The datasheet states to use a 100pF capacitor (C1) across the top feedback resistor. There is also a requirement to keep the impedance of C1 at 10kHz lower than the value of R2. (For C1=100pF, Zc1 = 1/(2*pi*10kHz*100pF) = 159KOhm. I want to know if it’s OK to scale C1 and R2 to get more current flowing through R2 to improve noise immunity. For example, C1 = 560pF and R2 = 33.2k?
Page 11-12 of the datasheet is below:
1680.TPS798xx.pptx
Yes, you can scale the resistors and capacitors. It's the poles and zeroes that are important, not the absolute value of the resistor and capacitor values.