The APL3552AQBI-TRG is a Power Management Integrated Circuit (PMIC), manufactured by Anpec. It is an advanced buck converter and Power Distribution Switch (PDS) which integrates a high-performance step-down current-mode converter with a power 4-channel distribution switch. The chip is packaged in a TDFN-6_2x2mm RoHS compliant package, and provides both communication and power in a single package. It is intended to provide high efficiency, low-noise and low-power operation. The APL3552AQBI-COM provides various features like voltage tracking, wide input voltage range, adjustable current limit, fast slew rate and low dropout operation. Furthermore, the device also offers an input voltage range up to 5.5V, allowing system designers to design power supply rails for a wide range of applications.