SY8106A
From linux-sunxi.org
The SY8106A is an I2C programmable voltage regulator used by Orange Pi boards with H3 SoC. 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