ACT8945A

ACT8945A Rev 2, 11-Feb-14 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 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 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 1100mA of output current, while the third supports up to 1200mA. All four low-dropout linear regulators are highperformance, 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. GENERAL DESCRIPTION The ACT8945A is a compl...