NXP Semiconductors PCA9421UK-EVM Evaluation Board is designed to help users evaluate the features and performance of the PCA9420 and PCA9421. The NXP Semiconductors PCA9420 and PCA9421 are highly integrated Power Management ICs (PMICs) that provide a complete power management solution for low-power microcontrollers or similar applications. These devices integrate 2x buck converters and 2x LDOs with a programmable output voltage range.