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ACT8892 Datasheet Preview

ACT8892 Datasheet

Advanced Power Management-Unit

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ACT8892
Rev 3, 28-June-17
Advanced Power Management Unit
FEATURES
Three Step-Down DC/DC Converters
Four Low-Dropout Linear Regulators
I2CTM Serial Interface
Advanced Enable/Disable Sequencing Controller
Minimal External Components
Tiny 4×4mm TQFN44-32 Package
0.75mm Package Height
Pb-Free and RoHS Compliant
GENERAL DESCRIPTION
The ACT8892 is a complete, cost effective, highly-
efficient ActivePMUTM power management solution
that is ideal for a wide range of high performance
portable handheld applications such as tablet or pad
devices.
This device features three step-down DC/DC
converters and four low-noise, low-dropout linear
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 low-dropout linear regulators are high-
performance, low-noise, regulators that supply up to
320mA.
The ACT8892 is available in a compact, Pb-Free
and RoHS-compliant TQFN44-32 package.
TYPICAL APPLICATION DIAGRAM
Battery
nPBIN
PWRHLD
PWREN
VSEL
nPBSTAT
SCL
SDA
nIRQ
nRSTO
System
Control
ACT8892
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
I2CTM is a trademark of NXP.
-1-
REG1
Step-Down
DC/DC
REG2
Step-Down
DC/DC
REG3
Step-Down
DC/DC
REG4
LDO
REG5
LDO
REG6
LDO
REG7
LDO
VSYS
OUT1
0.6V to 3.9V
Up to 1150mA
OUT2
0.6V to 3.9V
Up to 1150mA
OUT3
0.6V to 3.9V
Up to 1300mA
OUT4
0.6V to 3.9V
Up to 320mA
OUT5
0.6V to 3.9V
Up to 320mA
OUT6
0.6V to 3.9V
Up to 320mA
OUT7
0.6V to 3.9V
Up to 320mA
www.active-semi.com
Copyright © 2015-2017 Active-Semi, Inc.




Active-Semi

ACT8892 Datasheet Preview

ACT8892 Datasheet

Advanced Power Management-Unit

No Preview Available !

ACT8892
Rev 2, 01-Jul-15
TABLE OF CONTENTS
General Information .....................................................................................................................................p. 01
Functional Block Diagram............................................................................................................................p. 03
Ordering Information....................................................................................................................................p. 04
Pin Configuration .........................................................................................................................................p. 04
Pin Descriptions ...........................................................................................................................................p. 05
Absolute Maximum Ratings .........................................................................................................................p. 07
I2C Interface Electrical Characteristics ........................................................................................................p. 08
Global Register Map ....................................................................................................................................p. 09
Register and Bit Descriptions ......................................................................................................................p. 10
System Control Electrical Characteristics....................................................................................................p. 14
Step-Down DC/DC Electrical Characteristics ..............................................................................................p. 15
Low-Noise LDO Electrical Characteristics...................................................................................................p. 16
Typical Performance Characteristics ...........................................................................................................p. 17
System control information ..........................................................................................................................p. 22
Control Signals .................................................................................................................................p. 22
Push-Button Control.........................................................................................................................p. 23
Control Sequences...........................................................................................................................p. 24
Functional Description .................................................................................................................................p. 27
I2C Interface .....................................................................................................................................p. 27
Voltage Monitor and Interrupt...........................................................................................................p. 27
Thermal Shutdown ...........................................................................................................................p. 27
Step-Down DC/DC Regulators ....................................................................................................................p. 28
General Description .........................................................................................................................p. 28
100% Duty Cycle Operation.............................................................................................................p. 28
Synchronous Rectification................................................................................................................p. 28
Soft-Start ..........................................................................................................................................p. 28
Compensation ..................................................................................................................................p. 28
Configuration Options ......................................................................................................................p. 28
OK[ ] and Output Fault Interrupt.......................................................................................................p. 29
PCB Layout Considerations .............................................................................................................p. 29
Low-Noise, Low-Dropout Linear Regulators................................................................................................p. 30
General Description .........................................................................................................................p. 30
Output Current Limit .........................................................................................................................p. 30
Compensation ..................................................................................................................................p. 30
Configuration Options ......................................................................................................................p. 30
OK[ ] and Output Fault Interrupt.......................................................................................................p. 30
PCB Layout Considerations .............................................................................................................p. 31
TQFN44-32 Package Outline and Dimensions ...........................................................................................p. 32
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
I2CTM is a trademark of NXP.
-2-
www.active-semi.com
Copyright © 2015-2017 Active-Semi, Inc.


Part Number ACT8892
Description Advanced Power Management-Unit
Maker Active-Semi
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ACT8892 Datasheet PDF






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