PMIC optimizes power, increases battery life for wearables

The MAX14720 PMIC optimizes power and battery life for wearable medical/fitness and IoT applications. The chip targets non-rechargeable battery (coin cell, dual alkaline) applications. In addition, an electronic battery seal extends shelf life by effectively disconnecting the battery prior to initial power-up. The power management device integrates five discrete devices including the power switch, linear regulator, buck regulator, buck-boost regulator, and monitor.

The PMIC runs from a primary cell and operates down to 1.8 V. It also features such as push button input monitoring, power-up sequencing, and voltage rail monitoring further reduce BOM cost and space. It is available in a 25-bump, 0.4-mm pitch, 2.26 x 2.14-mm wafer-level package (WLP), with an operating temperature from –40° to +85°C temperature range.