ACT8946AQJ203-T
Rev 1.0, 08-Jul-16
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
I2C Interface Electrical Characteristics ........................................................................................................p. 09
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
ActivePathTM Charger Electrical Characteristics..........................................................................................p. 19
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
I2C Interface......................................................................................................................................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
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