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Product Features

  • Three Step-Down DC/DC Converters
  • Four Low-Dropout Linear Regulators
  •  I²C Serial Interface
  • Advanced Enable/Disable Sequencing Controller
  • Minimal External Components
  • 0.75mm Package Height
  • Pb-Free and RoHS Compliant
  •  Tiny 4×4mm TQFN44-32 Package

The ACT8865 is a complete, 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 automation, medical devices and white goods.

This device features three step-down DC/DC converters and four low-noise, low-dropout linear (LDO) regulators.

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 LDO regulators are high-performance, low-noise, regulators that supply up to 320mA.
 

Advantages of our Modular Power PMU

Features Benefits
Space Saving With fully integrated power stages with high switching frequency
of 2.25MHz (1.125Mhz) to reduce external component size
Integrated sequencing Easy system level design with programmable Reset and Power
Good functions allows for flexible sequencing options
Seamless sequencing With external supplies via integrated GPIOs and Power Good signals
Highly configurable Via a I2C uP interface for status reporting and controlling

ACT8865 Datasheet

ACT8865 EVK User Guide

Application Note

Reference Design

SAMA5D2