I'm referring to "LM1577/LM2577 SIMPLE SWITCHER® Step-Up Voltage Regulator," SNOS658D –JUNE 1999–REVISED APRIL 2013.
1. What are the capacitance units for eq. 9 on p. 19? I assume uF. Please confirm correct.
2. What are the capacitance units for the compensation capacitor, Cc? I assume uF. Please confirm correct.
3. What voltage rating is appropriate for the compensation capacitor, Cc?
4. What is the purpose of the parentheses around 10 in the second ESR term in eq. 12 on p. 20? In fact, please explain this term as I have no idea how to evaluate it. See below:
5. What is the difference between LM1577 and LM2577?
6. Why is Cin only specified for LM1577 and not LM2577 (sec. 4, p. 20)?
7. On p. 21 it states, "If the LM1577 is located far from the supply source filter capacitors, an additional large electrolytic capacitor (e.g. 47 μF) is often required." I assume this is supposed to go between Vin and GND. Please confirm or correct.
Thanks.
