The TPS55289-Q1 integrates four MOSFETs providing a compact design for a variety of applications and is optimized for converting battery voltage into power supply rails. Through the I2C interface, the output voltage can be programmed from 0.8V to 22 V with 10 mV step and the output current limit is programmable up to 6.35A with 50 mA step, which is a good choice for USB Power Delivery (USB PD) applications. The TPS55289-Q1 has adjustable external loop compensation, programmable switching frequency, optional spread spectrum and rich protection features. All these features bring flexibility and design optimization for overall performance, as well as BOM optimization and design cost.