ADI Maxim SIMO PMIC New Product MAX77659
Increases Charging Speed for Ultra-Compact Wearables and Hearables
Reduces Overall Solution Size by 50%, Material Cost by 60%


Analog Devices (ADI) announced on the 24th the launch of MAX77659, a new single inductor multi-output power management integrated circuit (SIMO PMIC) with an integrated switch-mode buck-boost charger. The new product, suited for ultra-compact wearables, hearables, and IoT devices, guarantees operation for 4 hours or more with just 10 minutes of charging. This is approximately 4 times faster than existing solutions.

The new product integrates a switch-mode buck-boost charger and three independent programmable buck-boost regulators operating with a single inductor, reducing the overall solution size by up to 50%. It is offered in an ultra-compact 30-bump wafer level package (WLP) measuring 2.55mm × 2.37mm, and achieves material cost savings of up to 60% through single inductor usage and integrated charger. The complete solution footprint is 22mm², making it optimal for ultra-compact IoT applications.

The regulator operates at 91% efficiency from nominal load through overload conditions, with quiescent current consumption of 5µA under light load conditions. Additionally, automatic headroom control provides sufficient headroom for adjusting charging current and minimizes voltage drop to reduce heat generation.

Roger Yeung, General Manager of Maxim Integrated Battery Power Solutions at ADI, stated: "ADI's SIMO technology reduces the size of ultra-compact hearables and wearable devices while enhancing performance. MAX77659 enables shorter charging times and extended usage duration, improving convenience in daily life, and provides board space to accommodate various additional features required by portable devices such as expanded memory capacity, location tracking, and biometric sensing."