ACT8865 Advanced PMU solutions for the latest Atmel SAMA5 D2x, and D3x, D4x family eMPUs

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 automations, 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.



Ordering Info

PART NUMBER

VOUT1

VOUT2

VOUT3

VOUT4

VOUT5

VOUT6

VOUT7

PACKAGE

PINS

TEMPERATURE RANGE

ACT8865QI305-T
pdf

1.8V

1.2V

3.3V

2.5V

3.3V

OFF

OFF

TQFN44-32

32

-40°C to +85°C

ACT8865QI405-T
pdf

1.5V/1.35V

1.2V

3.3V

2.5V

3.3V

OFF

OFF

TQFN44-32

32

-40°C to +85°C

Key Features & Benefits

  • Up to 80% Component Count Reduction vs. Discrete Solutions
  • Up to 50% Solution Price Reduction
  • 2-4x Higher Reliability
  • 80% Reduction in Design Effort
  • <2mW Standby Power
  • Integrated Sequencing control: Pre-validated & Programmable for Atmel Processor Solutions
  • Lowest Noise for Analog Rails on Noise Sensitive Application
  • I2C™ Serial Interface

Block Diagram



Typical Application Diagram


Supported Applications


Evaluation Kit

The ACT8865EV contains a fully assembled and tested circuit board designed to demonstrate all the features of the ACT8865. The ACT8865EV includes a variety of test points and jumpers as necessary to configure and evaluate the ACT8865's functionality.


Atmel Design References


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