The TL1963A-33 has a 3.3 V fixed output, so this will be the set point for the adjustable regulator. Begin by selecting a R7 value less than 4.17 kΩ. In this.
Texas Instruments TL1963A-33 Series LDO Voltage Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas ...
$2.66
TL1963A-33DCYR Texas Instruments $2.6613 - 63dB@(120Hz) 1.5A Fixed 3.3V Positive electrode 20V SOT-223 Linear Voltage Regulators (LDO) ROHS ...