According to me, the best compromise for a pacman frog concerning light is a ReptiGlo from Exo Terra UVB2.0 13W.
It is soft light, nearly no dangerous UVB and no heating.
UVB is not necessary , but can be used for standard morphs for about 4 to 6 hours a day. Low UVB may be fine fir standard morphs, but NOT for Albinos. Their skin and eyes can be damaged by the UVB Radiation.