ACT8934

® ACT8934 Product Brief, 05-Nov-10 Advanced PMU for Samsung S3C2416/S3C2450 FEATURES Optimized for Samsung S3C2416/S3C2450 Processors GENERAL DESCRIPTION The ACT8934 is a complete, cost effective, highlyefficient ActivePMUTM power management solution, optimized for the unique power, voltagesequencing, and control requirements of the Samsung S3C2416/S3C2450 processors. 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 highefficiency, 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 900mA of output current, while the third supports up to 700mA. All four lowdropout linear regulators are high-performance, low-noise, regulators that supply up to 150mA, 150mA, 250mA, and 250mA, respectively. The ACT8934 is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package. Three Step-Down DC/DC Converters Four Low-Dropout Linear Regulators Integrated ActivePathTM Charger IC 2 TM 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 APPLICATIONS Personal Navigation Devices Portable Media Players Tablet Devices Smart P...