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EVK-ACT8945AQJ303-T Datasheet(PDF) 1 Page - Active-Semi, Inc |
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EVK-ACT8945AQJ303-T Datasheet(HTML) 1 Page - Active-Semi, Inc |
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1 / 42 page  - 1 - www.active-semi.com ActivePMU TM and ActivePathTM are trademarks of Active-Semi. I2CTM is a trademark of NXP. Copyright © 2014 Active-Semi, Inc. Innovative PowerTM Active-Semi Proprietary―For Authorized Recipients and Customers ACT8945A Advanced PMU for Atmel SAMA5D3 Series & SAM9 Series Processors 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 ACT8945A is a complete, cost effective, highly- efficient ActivePMUTM power management solution, optimized for the unique power, voltage- sequencing, and control requirements of the Atmel SAMA5D3 series: SAMA5D[31/33/34/35/36], and Atmel SAM9 series: SAM9G[15/25/35/45/46], SAM9X[25/35], SAM9M[10/11], SAM9N[11/12] processors. It is ideal for a wide range of high performance portable handheld applications such as human-machine interfaces, control panels, smart grid infrastructures, network gateways, M2M systems, 2D barcode scanners, barcode printers, machine vision equipment, as well as home and commercial building automations, POS terminals, medical devices and white goods. This device integrates the ActivePathTM 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 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 1100mA of output current, while the third supports up to 1200mA. All four low-dropout linear regulators are high- performance, low-noise regulators that supply up to 320mA of output current. The ACT8945A is available in a compact, Pb-Free and RoHS-compliant TQFN55-40 package. TYPICAL APPLICATION DIAGRAM Rev 2, 11-Feb-14 ACT8945A ActivePath TM Charger Control nPBIN REG1 REG2 REG3 REG4 REG5 REG6 REG7 SDA nRSTO nIRQ nPBSTAT 1.2V 3.3V VDDIODDR etc. VDDIOP etc. VDDFUSE VDDANA Auxiliary 1 Auxiliary 1 TWD TWCK GPIO FIQ/IRQ NRST 1.8V 1150mA 1150mA 1300mA 320mA 320mA 320mA 320mA nSTAT ISET PUSH BUTTON CHGIN CHARGE STATUS SCL Atmel SAMA5Dx Li+ Battery + TH VDDCORE_GBIT ENET etc. |
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