From the given component list, U3 is a SY6280AAAC which doesn't have an available datasheet excerpt. It's typically a low on-resistance, high-efficiency micro-power distribution switch. It is used to power management for portable devices (such as cell phones, digital cameras) and not typically used as a current limiter in the strictest sense.

U2 is a CN3063 which is a Li-ion solar battery charger chip from what I understand. Again, there is no datasheet excerpt for this component, but from commonly available information, it should have an in-built charge current limitation feature.

Therefore, if U3 (SY6280AAAC) is being used to selectively control power to U2 (CN3063), it should be suitable. However, more detailed analysis would require specific information from the datasheets which are not provided. Standard practice would involve setting up the CN3063 with its own current limiting based on the characteristics of the battery being used.

Be aware that strict current limiting might not be enough to ensure the safety of a battery charging circuit. Other factors like cell chemistry, temperature monitoring and safety timeouts should also be considered.

The U2 component in this project is a CN3063 chip, a linear single cell Li-Ion battery charger. This device is important in managing the charging of a Li-Ion battery from a solar panel (or any DC source). It controls the battery charging process to ensure safe charging and optimizes the battery life and performance. It also includes some safety features such as preventing overcharging and overcurrent.

In this context, it assumes that there's a solar panel and a battery involved in your project. I'm making this assumption based on the typical use-case of CN3063 and the mention of the "VSOLAR" net.

Please correct me if my assumption is wrong. Also, note that U2 should have been specified with a list of pins which are assumed connected in this response.

To determine if L2 (an inductor with a value of 2.2uH from the manufacturer Sunlord, part number SWPA3015S2R2MT) is appropriately sized for U1 (an RT8059GJ5 which I'm assuming is a DC/DC converter), we'd ideally consult the datasheets for both parts. However, I'm sorry, but unfortunately we don't have datasheet excerpts for either of these components available.

Usually, the datasheet of a DC-DC converter like U1 provides guidance on the suitable inductance value and sometimes even particular models of inductors that work well. The datasheet might specify minimum and maximum inductance, rated current, saturation current, and other essential parameters.

Given the regular operation of DC/DC converters, a 2.2µH inductor could be a reasonable choice, but without the datasheets or a design guide from the manufacturer, it's hard to confirm for sure. You should look up the datasheets or any application notes for the two components yourself to ensure compatibility.

Please note that the values I'm giving are purely assumptions based on general electrical engineering practices, as we don't have the datasheets or exact values provided. If these assumptions are invalid for your specific use case, you may need to provide more information.