The 20 year old datasheet for the REG1117 says "All models require an output capacitor for proper operation" with "a 10uF tantalum" or "aluminum electrolytic of 50uF or greater". It goes on to say that a high-quality capacitor should be used to assure that the ESR is less than 0.5ohm. Can I assume that a modern general purpose ceramic 10uF cap with ESR of less than 0.5ohm is OK to use?
I want to feed the 5V out of the REG1117-5 into the input of a TPS73633DBVT 3.3V LDO regulator who's data sheet says "Although an input capacitor is not required for stability, it is good analog design practice to connect a 0.1uF to 1uF low ESR capacitor across the input supply near the regulator. This counteracts reactive input sources and improves transient response, noise rejection, and ripple rejection. A higher-value capacitor may be necessary if large, fast rise-time load transients are anticipated or the device is located several inches from the power source."
Thanks,
Doug Hoyt
