ACT8934A
Rev 1, 22-Oct-12
Advanced PMU for Samsung S3C2416/S3C2450
FEATURES
•
Optimized for Samsung S3C2416/S3C2450
Processors
GENERAL DESCRIPTION
The ACT8934A is a complete, cost effective, highly-
efficient
ActivePMU
TM
power management solution,
optimized for the unique power, voltage-
sequencing, and control requirements of the
Samsung S3C2416/S3C2450 processors.
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 900mA of output current,
while the third supports up to 700mA. All four low-
dropout linear regulators are high-performance,
low-noise regulators that supply up to 150mA,
150mA, 250mA, and 250mA, respectively.
The ACT8934A is available in a compact, Pb-Free
and RoHS-compliant TQFN55-40 package.
•
•
•
•
•
•
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Three Step-Down DC/DC Converters
Four Low-Dropout Linear Regulators
Integrated
ActivePath
TM
Charger
IC
2 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
TYPICAL APPLICATION DIAGRAM
ACT8934A
Innovative Power
TM
ActivePMU
TM
and
ActivePath
TM
are trademarks of Active-Semi.
I
2
C
TM
is a trademark of NXP.
-1-
www.active-semi.com
Copyright © 2012 Active-Semi, Inc.