SY8106A

The SY8106A is an I2C programmable voltage regulator used by some Orange Pi boards with H3/H5 SoC (check the PMU/Vreg column in the Table of Allwinner based boards). The default/initial voltage is configured via a pair of resistors.

The datasheet pdf file has been posted to the linux-sunxi mailing list: https://groups.google.com/d/msg/linux-sunxi/XYSGx4k8nIE/AlS9X0GTAAAJ