Samsung Electronics Launches MUA01 and MUB01 PMICs for TWS
Integration of multiple individual chips, including MCUs and wireless charging receiver chips
The MUA01, with its built-in storage, offers a wide range of wearable applications.


On the 24th, Samsung Electronics unveiled an integrated power management IC (PMIC) optimized for the design of true wireless stereo (TWS) earphones.

The PMICs introduced this time are 'MUA01' for charging cases and 'MUB01' for earphones. By integrating various chips, each with about 10 or 5, into one, a wider battery space can be designed.

In the existing first-generation TWS, it was not easy to secure battery space because several individual chips, such as the MCU, wireless charging receiver chip, battery charging chip (Linear Charger), and battery level measurement chip (Fuel Gauge), had to be placed in a small space.

The new PMIC reduces PCB size by more than half compared to using individual chips, while also improving charging efficiency, allowing TWS devices to shrink in size while extending their operating time. This allows TWS manufacturers to produce products with lower material costs.

The MUA01 for charging cases supports both wired and wireless charging simultaneously, and increases charging current and efficiency for faster charging. Its embedded Flash internal data storage allows it to be used in a variety of applications, including small wearable devices.

MUA01 and MUB01 are installed in Samsung Electronics' second-generation TWS 'Galaxy Buds+'.