MAX20356

The MAX20356 is a highly integrated and programmable power-management solution designed for ultra-low-power wearable applications. It is optimized for size and efficiency to enhance the value of the end product by extending battery life and shrinking the overall solution size. A flexible set of power-optimized voltage regulators including multiple buck converters, a buck-boost converter, and linear regulators provide a high level of integration and the ability to create a fully optimized power architecture. The quiescent current of each regulator is ultra-low to extend battery life in always-on applications.The MAX20356 includes a complete battery-management solution with battery seal, charger, power path, and fuel gauge. Both thermal management and input protection are built into the charger. The device also includes a factory-programmable button controller with multiple inputs that are customizable to fit specific product user requirements.A low-noise, 1.5W buck-boost converter provides highly efficient and clean power conversion required for the LEDs used in optical heart-rate systems such as PPG and SPO₂measurements. The MAX20356 is also equipped with a nano I_Qfast transient LDO, optimized for use in analog front-end (AFE) sensors. The MAX20356 is configurable through an I²C interface that allows for programming various functions and reading the device status, including the ability to read temperature and supply voltages through the monitor multiplexer.The MAX20356 is available in a 63-bump, 0.5mm pitch, 3.71mm x 4.48mm, wafer-level package (WLP) and operates over the −40°C to +85°C extended temperature range.