Looking for a Buck-Boost Converter with 5V, 3.3V Buck and 12V Boost Outputs

Hello ADI Team,

I am working on a power management system where I need a buck-boost converter that can provide:

• 5V Buck Output

• 3.3V Buck Output

• 12V Boost Output

I found the LT1941 buck-boost converter, but the boost channel provides an inverted output, which is not suitable for my design.

System Configuration:

• The input supply to the buck-boost converter will come from a PMIC, which handles battery charging, solar, external VIN, and USB power management.

• The VSYS pin of the PMIC can range from 5V to 18V, depending on the available power source.

Requirement:

I need a single IC solution that can:

• Step down the VSYS voltage to 5V and 3.3V using buck converters.

• Step up the VSYS voltage to 12V using a non-inverting boost converter.

Is there any alternative buck-boost converter available that meets these requirements?

Thanks in advance for your help!