ACT8945A

    Advanced PMIC for Atmel SAMA5Dx Series & SAM9 Series Processors

    Key Features

    • Up to 80% component count reduction vs. discrete solutions
    • Up to 50% solution price reduction
    • 2-4x higher reliability
    • 80% reduction in design effort
    • < 2 mW standby power
    • Integrated sequencing control: Pre-validated & programmable for Atmel processor solutions
    • Lowest noise for analog rails in noise sensitive applications
    • I2C™ serial interface

    Qorvo's ACT8945A PMIC is a cost effective, highly efficient ActivePMU™ power management solution, optimized for the unique power, voltage sequencing, and control requirements of the Atmel SAMA5 and SAM9 based eMPU series processors. It is ideal for a wide range of high performance portable handheld applications such as smartwatches. wearables, POS terminals, tablet PCs, 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, medical devices and white goods.

    This device features three step-down DC/DC converters and four low-noise, low-dropout (LDO) regulators, along with a complete battery charging solution featuring ActivePath™ system-power selection function. The three DC/DC converters utilize a high efficiency, fixed-frequency (2 MHz), current-mode PWM control architecture that reduces the number of external components. Two DC/DCs are capable of supplying up to 1100 mA of output current, while the third supports up to 1200 mA. All four LDO regulators are high performance, low-noise regulators capable of supplying up to 320 mA of output current.

    Typical Applications

      • IOT
      • POS
      • Wearables
      • Smartwatches
      • HMI
      • M2M
      • White Goods
      • Other PMU
    Application Processors Atmel SAMA5D[31/33/34/35/36], SAM9G[15/25/35/45/46], SAM9X[25/35], SAM9M[10/11], SAM9N[11/12]
    Battery Charger ActivePath™
    Step-Down Converters 4
    Bucks Configurable as Load Switch 0
    Step-Up Converters 0
    Buck-Boost Converters 0
    LDO Regulators 3
    LDOs Configurable as Load Switch 0
    Interface I2C
    Package Type TQFN, 40-pin
    Package(mm) 5.0 x 5.0
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99

    ACT8945AEVK1-305ACT8945AEVK1-305 Evaluation Kit

    ACT8945AEVK1-305 User's Guide

    ACT8945AEVK1-305 can be used as a standalone board if desired. However, to access the internal registers and to take full advantage of the IC's capability, the user must connect the EVK kit to a PC with Qorvo's USB-TO I²C interface dongle and use the GUI software.

    The EVK provides full access to the each converter's input and output voltage, as well as all the digital control signals. This gives the user the flexibility to configure the EVK to match their real world system.

    Note that the ACT8945AEVK1-305 is specifically configured for the ACT8945AQJ305.

    ACT8945A GUI

    The ACT8945A Graphical User Interface (GUI) is packaged in a ZIP file that includes the software and all necessary drivers to communicate with the ACT8945AEVK1-305 Evaluation Tool, as well as all descriptions how to use the tool.