ACT8938QJ131-T datasheet(1/46 Pages) ACTIVE-SEMI

Part #	ACT8938QJ131-T

Description	Advanced PMU for Marvell Aspen

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Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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ActivePMU

TM and ActivePathTM are trademarks of Active-Semi.

I2CTM is a trademark of NXP.

Innovative PowerTM

Active-Semi Proprietary―For Authorized Recipients and Customers

Rev 3, 23-Dec-11

ACT8938

Advanced PMU for Marvell Aspen

FEATURES

• Optimized for Marvell Aspen Processors

• 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 ACT8938 is a complete, cost effective, highly

efficient ActivePMUTM power management solution,

optimized

for

the

unique

power,

voltage

sequencing, and control requirements of the Marvell

Aspen processor.

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 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

150mA, 150mA, 320mA and 320mA respectively.

The ACT8938 is available in a compact, Pb-Free

and RoHS-compliant TQFN55-40 package .

TYPICAL APPLICATION DIAGRAM

Active-Semi

Marvell

Aspen

®

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