Maxim Integrated Korea announced new power management semiconductors (PMICs) 'MAX77650' and 'MAX77651'.

The two products can improve the battery life and efficiency of size-constrained wearable/hearable devices such as smart clothing, watches, Bluetooth headphones, and activity monitors.

As the form factor of wearable and hearable devices shrinks, component miniaturization has emerged as a key issue. PMICs for most small devices powered by lithium-ion batteries require current regulators such as boost, buck, and LDO (Low Dropout) regulators, chargers, and LED indicators. Maxim has integrated all these features into a compact power solution that is less than half the size (19.2 ^mm² ) of existing ones, saving space and increasing efficiency.

The MAX77650 and MAX77651 single-inductor multi-output (SIMO) buck-boost regulators reduce the total number of components and maximize available board space by providing three independently programmable power rails, a 150mA LDO, and three current sink LED drivers with a single inductor.

For design flexibility, the MAX77650 operates at up to 3.3V, and the MAX77651 at up to 5V. Both solutions support analog multiplexer (MUX) outputs for safe battery monitoring, making them suitable for low-power designs. They achieve minimum standby power of 0.3µA and 5.6µA, respectively. Three-output SIMO channels and an LDO provide high efficiency by extending lithium-ion battery life.

Scott Kim, Business Manager for Mobile Power at Maxim Integrated, stated, “The MAX77650 and MAX77651 are ultra-small, ultra-low-power battery charging solutions developed with Maxim’s PMIC expertise that reflect the growing market. Both solutions are optimized for small batteries. Maxim provides various factory programmable options (OTPs) to help customers optimize solutions according to their needs and accelerate time-to-market.”