Suitable replacement / upgrade for Sharp PQ05RF1 and PQ30RV1 voltage regulators?

Hi

I am looking to change two voltage regulators types that does not seem to be made anymore. I am looking for products replacement / upgrade for Sharp PQ05RF1 and PQ30RV1 voltage regulators.

Is there anyone that could help me out identifying either a direct same replacement or an upgrade (even better)? This is for a game console (the Sega Wondermega made in 1992).

Here are the main specs:

Sharp PQ05RF1
5V Output - Output voltage precision:±5%

Sharp PQ30RV1
Low power-loss (Dropout voltage : MAX.0.5V)
Variable output voltage (setting range : 1.5 to 30V)

Thanks in advance!

Charles