ACT8938
Product Brief, 15-Aug-13
Advanced PMU for Marvell Aspen FEATURES
• • • • • • • •
Optimized for Marvell Aspen Pr...
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...