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ACT8931A fiches techniques PDF

Active-Semi - Advanced PMU

Numéro de référence ACT8931A
Description Advanced PMU
Fabricant Active-Semi 
Logo Active-Semi 





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ACT8931A fiche technique
ACT8931A
Rev 3, 29-Nov-12
Advanced PMU for Rockchip RK2928/RK2926 Processors
FEATURES
Three Step-Down DC/DC Converters
Four Low-Dropout Linear Regulators
Integrated ActivePathTM Charger
I2CTM 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 ACT8931A is a complete, cost effective, highly-
efficient ActivePMUTM power management solution,
optimized for the unique power, voltage-
sequencing, and control requirements of the
Rockchip RK2928/RK2926 processors. It is ideal for a
wide range of high performance portable handheld
applications such as tablet or pad devices. This device
integrates the ActivePathTM 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 ActivePathTM
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 1100mA of output
current, while the third supports up to 1200mA. All
four low-dropout linear regulators are high-
performance, low-noise regulators that supply up to
320mA of output current.
The ACT8931A is available in a compact, Pb-Free
and RoHS-compliant TQFN55-40 package.
TYPICAL APPLICATION DIAGRAM
Innovative PowerTM
ActivePMUTM and ActivePathTM are trademarks of Active-Semi.
I2CTM is a trademark of NXP.
-1-
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.
Free Datasheet http://www.datasheet4u.com/

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