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TM

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ActivePMU

I

Product Brief, 29-Nov-10

ACT8890

Advanced PMU for Portable Handheld Equipment

FEATURES

− 0.75mm Package Height

− Pb-Free and RoHS Compliant

APPLICATIONS

GENERAL DESCRIPTION

The ACT8890 is a complete, cost effective, highly-

efficient ActivePMU

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

®