The TDA3663/N1,135 from NXP USA Inc. is a positive fixed linear voltage regulator Integrated Circuit with 1 output rated at 3.3 V and 100 mA, in an SC-73 package.
The TDA3664AT/N1/N,118 from NXP USA Inc. is a linear voltage regulator Integrated Circuit with a positive fixed 5 V output at 100 mA, in an 8-SO package.