ACT8942_14 Datasheet, PDF (1/44 Pages) Active-Semi, Inc – Advanced PMU for Amlogic AML8726-M3 Processor

ACT8942
Rev 2, 15-Nov-12
Advanced PMU for Amlogic AML8726-M3 Processor
FEATURES
• Three Step-Down DC/DC Converters
• Four Low-Dropout Linear Regulators
• Integrated ActivePath^TM Charger
• I²C^TM Serial Interface
• Advanced Enable/Disable Sequencing Controller
• Minimal External Components
• Tiny 5×5mm TQFN55-40 Package
− 0.75mm Package Height
− Pb-Free and RoHS Compliant
GENERAL DESCRIPTION
The ACT8942 is a complete, cost effective, highly-
efficient ActivePMU^TM power management solution,
optimized for the unique power, voltage-
sequencing, and control requirements of the
Amlogic AML8726-M3 processor. It is ideal for a wide
range of high performance portable handheld
applications such as tablet or pad devices. This device
integrates the ActivePath^TM complete battery charging
and management system with seven power supply
channels.
This device features three step-down DC/DC
converters and four low-noise, low-dropout linear
regulators, along with a complete battery charging
solution featuring the advanced ActivePath^TM
system-power selection function.
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
80mA, 320mA, 320mA, 320mA, respectively.
The ACT8942 is available in a compact, Pb-Free
and RoHS-compliant TQFN55-40 package.
TYPICAL APPLICATION DIAGRAM
Innovative Power^TM
-1-
Active-Semi Proprietary―For Authorized Recipients and Customers
ActivePMU^TM and ActivePath^TM are trademarks of Active-Semi.
I²C^TM is a trademark of NXP.
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.