ACT8798 datasheet(1/2 Pages) ACTIVE-SEMI

Il numero della parte	ACT8798

Spiegazioni elettronici	Six Channel Integrated Power Management IC for Handheld Portable Equipment

PDF	2 Pages

Scroll/Zoom	100%

Produttore elettronici	ACTIVE-SEMI [Active-Semi, Inc]

Homepage	http://www.active-semi.com

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1 / 2 page

Innovative Products. Active Solutions.

- 1 -

www.active-semi.com

ActivePMU

TM is a trademark of Active-Semi.

I

2CTM is a trademark of Philips Electronics.

ACT8798

Product Brief, 31-Jan-08

Advanced Information―All Information Subject to Change

Six Channel Integrated Power Management IC

for Handheld Portable Equipment

SYSTEM BLOCK DIAGRAM

FEATURES

• Multiple Patents Pending

• Six Integrated Regulators

− 1.2A PWM Step-Down DC/DC

− 750mA PWM Step-Down DC/DC

− 250mA Low Noise LDO

• I2CTM Compatible Serial Interface

− Programmable Output Voltages

− Configurable Operating Modes

• Minimal External Components

• 4x4mm, Thin-QFN (TQFN44-24) Package

− Only 0.75mm Height

− RoHS Compliant

APPLICATIONS

• Portable Devices and PDAs

• Wireless Handhelds

• DMB Enabled Devices

• GPS Receivers, etc.

GENERAL DESCRIPTION

The patent-pending ACT8798 is a complete, cost-

effective, highly-efficient ActivePMUTM power man-

agement solution that is ideal for a wide range of

portable handheld equipment. This device inte-

grates three step-down DC/DC converters and

three low dropout linear regulators (LDOs) into a

single, thin, space-saving package. An I2C Serial

Interface provides programmability for the DC/DC

converters and LDOs.

REG1, REG2 and REG3 are fixed-frequency, cur-

rent-mode PWM step-down DC/DC converters that

are optimized for high efficiency and are capable of

supplying up to 1.2A, 1.2A and 750mA, respec-

tively. REG4, REG5 and REG6 are low noise, high

PSRR linear regulators that are capable of supply-

ing up to 250mA each.

The ACT8798 is available in a tiny 4mm x 4mm

24-pin Thin-QFN package that is just 0.75mm thin.

ACT8798

System

Control

REG2

Step-Down

DC/DC

REG1

Step-Down

DC/DC

REG3

Step-Down

DC/DC

REG4

LDO

REG5

LDO

REG6

LDO

nRSTO

PWRHLD

SCL

SDA

Battery

nMSTR

OUT4

0.645V to 3.7V

Up to 250mA

OUT2

1.1V to 4.4V

Up to 1.2A

OUT6

1.4V to 3.7V

Up to 250mA

OUT3

1.1V to 4.4V

Up to 750mA

OUT1

1.1V to 4.4V

Up to 1.2A

OUT5

1.4V to 3.7V

Up to 250mA

ON3

TM

PMU

Active

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