How a SIMO PMIC Enhances Power Efficiency for Wearable IoT Designs

By: Norberto Sánchez-Dichi and Mohamed Ismail

Abstract: Small form factor and minimal power loss are key criteria for internet of things (IoT) hardware, particularly wearables. Meeting these criteria typically involves some tradeoffs. For example, to meet a specific power consumption goal, a designer usually would have to compromise with an increase in design size. This application note explains how an integrated power management IC (PMIC) operating three independent switching regulator outputs while using a single inductor enables compact IoT hardware powered by a Li+ cell.