LD39020 Product Description
LD39020 is a STMicroelectronics Low Dropout Regulator (LDO) series intended for portable and embedded systems. The series is associated with an output-current class of 200 mA and package options that include SOT-23-5. Because the supplied keyword is a product family rather than a complete orderable suffix, the exact output voltage, package code, electrical limits and lifecycle status must be confirmed before quotation.
Datasheet search: https://www.alldatasheet.net/view.jsp?Searchword=LD39020
Manufacturer source: https://www.st.com/en/power-management/ld39020.html

