ACT8946AQJ203-T

Rev 1.0, 08-Jul-16

ActivePMU and ActivePath are trademarks of Active-Semi.

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Copyright © 2016 Active-Semi, Inc.

TABLE OF CONTENTS

General Information .....................................................................................................................................p. 01

Functional Block Diagram............................................................................................................................p. 04

Ordering Information....................................................................................................................................p. 05

Pin Configuration .........................................................................................................................................p. 05

Pin Descriptions ...........................................................................................................................................p. 06

Absolute Maximum Ratings .........................................................................................................................p. 08

Global Register Map ....................................................................................................................................p. 10

Register and Bit Descriptions ......................................................................................................................p. 11

System Control Electrical Characteristics....................................................................................................p. 16

Step-Down DC/DC Electrical Characteristics ..............................................................................................p. 17

Low-Noise LDO Electrical Characteristics...................................................................................................p. 18

Typical Performance Characteristics ...........................................................................................................p. 21

System Control Information .........................................................................................................................p. 25

Interfacing with the Hi351X Processors ...........................................................................................p. 25

Control Signals .................................................................................................................................p. 25

Control Sequences...........................................................................................................................p. 25

Functional Description .................................................................................................................................p. 26

Voltage Monitor and Interrupt...........................................................................................................p. 26

Thermal Shutdown ...........................................................................................................................p. 26

Step-Down DC/DC Regulators ....................................................................................................................p. 27

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

100% Duty Cycle Operation .............................................................................................................p. 27

Synchronous Rectification................................................................................................................p. 27

Soft-Start ..........................................................................................................................................p. 27

Compensation ..................................................................................................................................p. 27

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

OK[ ] and Output Fault Interrupt.......................................................................................................p. 28

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

Low-Noise, Low-Dropout Linear Regulators................................................................................................p. 29

General Description..........................................................................................................................p. 29

Output Current Limit .........................................................................................................................p. 29

Compensation ..................................................................................................................................p. 29

Configuration Options.......................................................................................................................p. 29

OK[ ] and Output Fault Interrupt.......................................................................................................p. 29

PCB Layout Considerations .............................................................................................................p. 29

ActivePath Charger.....................................................................................................................................p. 30

General Description..........................................................................................................................p. 30

ActivePath Architecture ....................................................................................................................p. 30

System Configuration Optimization..................................................................................................p. 30

Input Protection ................................................................................................................................p. 30

Battery Management ........................................................................................................................p. 30

Charge Current Programming ..........................................................................................................p. 31

Charger Input Interrupts ...................................................................................................................p. 31

Thermal Regulation ..........................................................................................................................p. 31

Charge Safety Timers ......................................................................................................................p. 31

Charger Timer Interrupts ..................................................................................................................p. 31

Charge Status Indicator....................................................................................................................p. 32

Reverse-Current Protection..............................................................................................................p. 32

Battery Temperature Monitoring ......................................................................................................p. 32

Battery Temperature Interrupts ........................................................................................................p. 32

Charge-Control State Machine.........................................................................................................p. 33

State Machine Interrupts ..................................................................................................................p. 33