ACT8938

ACT8938 Product Brief, 15-Aug-13 Advanced PMU for Marvell Aspen FEATURES Optimized for Marvell Aspen Processors Three Step-Down DC/DC Converters Four Low-Dropout Linear Regulators Integrated ActivePathTM Charger I2CTM Serial Interface Advanced Enable/Disable Sequencing Controller Minimal External Components Tiny 5×5mm TQFN55-40 Package − 0.75mm Package Height − Pb-Free and RoHS Compliant GENERAL DESCRIPTION The ACT8938 is a complete, cost effective, highly efficient ActivePMUTM power management solution, optimized for the unique power, voltage sequencing, and control requirements of the Marvell Aspen processor. This device features three step-down DC/DC converters and four low-noise, low-dropout linear regulators, along with a complete battery charging solution featuring the advanced ActivePathTM system-power selection function. The three DC/DC converters utilize a high efficiency, fixed-frequency (2MHz), current-mode PWM control architecture that requires a minimum number of external components. Two DC/DCs are capable of supplying up to 1150mA of output current, while the third supports up to 1300mA. All four low-dropout linear regulators are highperformance, low-noise, regulators that supply up to 150mA, 150mA, 320mA and 320mA respectively. The ACT8938 is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package . APPLICATIONS Personal Navigation Devices Portable Media Players Tablet Devices Smart Phones MIDs TYPICAL APPLICATION DIAG...