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ACT8890_Released_Product-Brief

ACT8890_Released_Product-Brief
ACT8890_Released_Product-Brief

Innovative Power TM- 1 -

https://www.sodocs.net/doc/9311220968.html,

Copyright ? 2010 Active-Semi, Inc.

ActivePMU

TM

is trademark of Active-Semi.

I

2C

TM

is a trademark of NXP.

Product Brief, 29-Nov-10

ACT8890

Advanced PMU for Portable Handheld Equipment FEATURES

?

Three Step-Down DC/DC Converters

? Four Low-Dropout Linear Regulators

? I2C

TM Serial Interface

?

Advanced Enable/Disable Sequencing Controller

?

Minimal External Components

? Tiny 5×5mm TQFN55-32 Package

? 0.75mm Package Height

? Pb-Free and RoHS Compliant

APPLICATIONS

? Personal Navigation Devices

? Portable Media Players

? Tablet Devices

? Smart Phones

? MIDs

GENERAL DESCRIPTION

The ACT8890 is a complete, cost effective, highly-

efficient ActivePMU TM power management solution,

for portable handheld equipment such as

Smartphones, Mobile Internet Devices (MID),

eBooks and etc.

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 each.

The ACT8890 is available in a compact, Pb-Free

and RoHS-compliant TQFN55-32 package. TYPICAL APPLICATION DIAGRAM

?

ACT8890

Product Brief, 29-Nov-10

?

Innovative Power TM - 2 - https://www.sodocs.net/doc/9311220968.html,

Copyright ? 2010 Active-Semi, Inc.

OUT2

OUT1

REG4OUT3

PRODUCT OPTIONS

Block

Function

Output Voltage

Capability

REG1 Step-Down DC/DC Adjustable, or 0.6V to 3.9V

1150mA

REG2 Step-Down DC/DC 1150mA REG3 Step-Down DC/DC

1300mA REG4 LDO 0.6V to 3.9V

320mA REG5 LDO 320mA REG6 LDO 320mA REG7

LDO

320mA

FUNCTIONAL BLOCK DIAGRAM

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