The easiest way to build an efficient power management system for a battery-powered portable application is to use an IC that combines all power control functions into a single chip, namely a PMU or also known as a PMIC. Often such complex power supply with discrete components is less efficient and cost increasing.
Ricoh, as a leading PMU IC supplier, has been developing mixed signal PMU ICs for over 10 years for high-end mobile phones, making great contributions to save power consumption and circuit board space. Ricoh’s PMU ICs are designed to use as power supplies for ARM® Cortex processors, GPS/PND devices, Industrial computer module boards, and Set Top Box devices. In addition, these ICs are also used for example in hand terminal devices, mobile phones, and tablets.