ACT5880 查看數據表（PDF） - Active-Semi, Inc
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ACT5880 Datasheet PDF : 87 Pages
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ACT5880
Rev 2, 03-Sep-13
TABLE OF CONTENTS
General Description .....................................................................................................................................p. 01
Functional Block Diagram............................................................................................................................p. 04
Ordering Information....................................................................................................................................p. 05
Pin Configuration .........................................................................................................................................p. 06
Pin Descriptions...........................................................................................................................................p. 07
Absolute Maximum Ratings .........................................................................................................................p. 11
I2C Interface Electrical Characteristics ........................................................................................................p. 12
Global Register Map ....................................................................................................................................p. 13
Register and Bit Descriptions ...................................................................................................................... p.18
Interrupt Descriptions...................................................................................................................................p. 42
Step-Down DC/DC and LDO Output Voltage Setting..................................................................................p. 44
VBBAT Output Voltage Setting....................................................................................................................p. 44
Charger Voltage Setting ..............................................................................................................................p. 44
Fast Charge Current Setting........................................................................................................................p. 44
Non-Linear Duty Setting ..............................................................................................................................p. 45
Step-Up DC/DC Voltage Setting..................................................................................................................p. 45
System Control Electrical Characteristics....................................................................................................p. 46
Step-Down DC/DC Electrical Characteristics ..............................................................................................p. 47
Step-Up DC/DC Electrical Characteristics...................................................................................................p. 48
Low-Noise LDO Electrical Characteristics...................................................................................................p. 49
Single-Cell Li+ Charger Electrical Characteristics.......................................................................................p. 50
Back-Up Battery Charger Electrical Characteristics ....................................................................................p. 52
Always-On Low Power LDO Electrical Characteristics ...............................................................................p. 52
Real Time Clock Electrical Characteristics..................................................................................................p. 53
Open-Drain Driver Electrical Characteristics ...............................................................................................p. 53
TSC ADC Electrical Characteristics ............................................................................................................p. 54
Typical Performance Characteristics...........................................................................................................p. 55
Application Information ................................................................................................................................p. 60
System and Control Information.......................................................................................................p. 60
Device Power States........................................................................................................................p. 60
System Control Signals....................................................................................................................p. 60
Control Sequences...........................................................................................................................p. 61
House Keeping Functions ...............................................................................................................p. 62
Step-Down DC/DC Regulators ....................................................................................................................p. 64
General Description..........................................................................................................................p. 64
Manipulation .....................................................................................................................................p. 64
Summary of Key Specifications .......................................................................................................p. 64
Component Selection .......................................................................................................................p. 65
PCB Layout Considerations.............................................................................................................p. 65
Configurable Step-Up DC/DC Regulator .....................................................................................................p. 66
General Description..........................................................................................................................p. 66
Voltage Regulation Option ...............................................................................................................p. 66
Current Regulation Option ...............................................................................................................p. 66
Component Selection ......................................................................................................................p. 67
PCB Layout Considerations.............................................................................................................p. 67
Low-Noise, Low-Dropout Linear Regulators................................................................................................p. 68
General Description..........................................................................................................................p. 68
Output Current Limit .........................................................................................................................p. 68
Configuration Options.......................................................................................................................p. 68
OK[ ] and Output Fault Interrupt.......................................................................................................p. 68
The Always-On LDO and the Backup Battery Charger ....................................................................p. 69
Component Selection .......................................................................................................................p. 69
PCB Layout Considerations .............................................................................................................p. 70
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