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ACT8939 Datasheet(PDF) 1 Page - Active-Semi, Inc |
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ACT8939 Datasheet(HTML) 1 Page - Active-Semi, Inc |
1 / 3 page Innovative Power TM - 1 - www.active-semi.com Copyright © 2013 Active-Semi, Inc. ActivePMU TM and ActivePathTM are trademarks of Active-Semi. I 2CTM is a trademark of NXP. ACT8939 Advanced PMU for Freescale i.MX53 Processor FEATURES • 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 ACT8939 is a complete, cost effective, highly- efficient ActivePMU TM power management solution, optimized for the unique power, voltage- sequencing, and control requirements of the Freescale i.MX53 processor. It is ideal for a wide range of high performance portable handheld applications such as tablet or pad devices. This device integrates the ActivePath TM complete battery charging and management system with seven power supply channels. 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 ActivePath TM 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 high- performance, low-noise regulators that supply up to 320mA of output current. The ACT8939 is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package. TYPICAL APPLICATION DIAGRAM Product Brief, 15-Aug-13 |
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