This slide book introduces the demands of emerging high-performance power-management ICs and discusses up-to-date circuit-design techniques aimed at addressing them, especially within the context of portable microelectronics. The material starts with a top-down design perspective, much like in an industry setting, and discusses the system "from the ground up" (from basic analog IC concepts and voltage references to low-dropout regulators and switched-inductor supplies) with an educational mindset, rigorously surveying, analyzing, and evaluating basic concepts and the state of the art. The driving objective of the book is to enable the reader to model, analyze, and design power-conditioning ICs using bipolar and CMOS transistors. The material places emphasis on basic understanding and critical thinking, that is, on intuitive grasp of concepts, which is the foundation for innovative IC design.