ACT8865

Advanced PMU for Atmel SAMA5Dx Series & SAM9 Series Processors

Data Sheet Rev. H, September 2019 | Subject to change without notice

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TABLE OF CONTENTS

Functional Block Diagram ................................................................................................................................................. 3

Ordering Information ......................................................................................................................................................... 4

Pin Configuration............................................................................................................................................................... 4

Pin Descriptions ................................................................................................................................................................ 5

Absolute Maximum Ratings .............................................................................................................................................. 7

I2C Interface Electrical Characteristics.............................................................................................................................. 8

Global Register Map ......................................................................................................................................................... 9

Register and Bit Descriptions.......................................................................................................................................... 10

System Control Electrical Characteristics ....................................................................................................................... 14

Step-Down DC/DC Electrical Characteristics ................................................................................................................. 15

Low-Noise LDO Electrical Characteristics ...................................................................................................................... 16

Typical Performance Characteristics .............................................................................................................................. 17

System Control Information............................................................................................................................................. 21

Interfacing with the Atmel SAMA5D2, SAMA5D3 Series & SAM9 Series Processors............................................... 21

Control Signals............................................................................................................................................................ 22

Push-Button Control.................................................................................................................................................... 22

Control Sequences ..................................................................................................................................................... 23

Functional Description..................................................................................................................................................... 24

I2C Interface ................................................................................................................................................................ 24

Voltage Monitor and Interrupt ..................................................................................................................................... 24

Thermal Shutdown...................................................................................................................................................... 24

Step-Down DC/DC Regulators........................................................................................................................................ 25

General Description .................................................................................................................................................... 25

100% Duty Cycle Operation ....................................................................................................................................... 25

Synchronous Rectification .......................................................................................................................................... 25

Soft-Start..................................................................................................................................................................... 25

Compensation............................................................................................................................................................. 25

OK[ ] and Output Fault Interrupt ................................................................................................................................. 26

PCB Layout Considerations........................................................................................................................................ 26

Low-Noise, Low-Dropout Linear Regulators ................................................................................................................... 27

General Description .................................................................................................................................................... 27

Output Current Limit.................................................................................................................................................... 27

Compensation............................................................................................................................................................. 27

Configuration Options ................................................................................................................................................. 27

OK[ ] and Output Fault Interrupt ................................................................................................................................. 27

PCB Layout Considerations........................................................................................................................................ 28

Errata Info........................................................................................................................................................................ 29

TQFN44-32 Package Outline and Dimensions............................................................................................................... 30

Revision History .............................................................................................................................................................. 31