Maxim Integrated MAX14720 power management integrated circuit (PMIC)

With the MAX14720 power management integrated circuit (PMIC) from Maxim Integrated, designers can optimise power and battery life for wearable medical/fitness and Internet of Things (IoT) applications. The product is suitable for non-rechargeable battery (coin cell, dual alkaline) applications where size and energy efficiency are critical.

An electronic battery seal extends shelf life by effectively disconnecting the battery prior to initial power-up. Integrating the functionality of five discrete devices — power switch, linear regulator, buck regulator, buck-boost regulator and monitor — the device is said to reduce the bill of materials (BOM) and allow for smaller form factor designs.

While most battery PMICs operate from 3 V, the chip runs from a primary cell and operates down to 1.8 V. Low quiescent current IP is critical for wearable applications because it can extend the runtime of the system. Value-added features, such as push-button input monitoring, power-up sequencing and voltage rail monitoring, further reduce BOM cost and space.

The product is available in a 25-bump, 0.4 mm pitch, 2.26 x 2.14 mm wafer-level package (WLP). It is suitable for the -40 to 85°C temperature range.