Datasheet > ACT8798

ACT8798

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
技领 - ACTIVE-SEMI		便携式便携式设备
页数	文件大小	规格书
2页	109K
描述
Six Channel Integrated Power Management IC for Handheld Portable Equipment

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ACT8798 数据手册

ACT8798

Product Brief, 31-Jan-08

Advanced Information―All Information Subject to Change

Six Channel Integrated Power Management IC

for Handheld Portable Equipment

FEATURES

GENERAL DESCRIPTION

The patent-pending ACT8798 is a complete, cost-

effective, highly-efficient ActivePMU^TMpower 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.

• Multiple Patents Pending

• Six Integrated Regulators

− 1.2A PWM Step-Down DC/DC

− 750mA PWM Step-Down DC/DC

− 250mA Low Noise LDO

• I²C^TMCompatible Serial Interface

− Programmable Output Voltages

− Configurable Operating Modes

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-

• Minimal External Components

• 4x4mm, Thin-QFN (TQFN44-24) Package

− Only 0.75mm Height

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.

− RoHS Compliant

APPLICATIONS

• Portable Devices and PDAs

• Wireless Handhelds

• DMB Enabled Devices

• GPS Receivers, etc.

SYSTEM BLOCK DIAGRAM

OUT2

1.1V to 4.4V

Up to 1.2A

REG2

Battery

nMSTR

nRSTO

Step-Down

DC/DC

OUT3

1.1V to 4.4V

Up to 750mA

REG3

Step-Down

DC/DC

PWRHLD

ON3

System

Control

SCL

OUT4

0.645V to 3.7V

Up to 250mA

REG4

LDO

SDA

OUT1

1.1V to 4.4V

Up to 1.2A

REG1

Step-Down

DC/DC

OUT5

1.4V to 3.7V

Up to 250mA

REG5

LDO

OUT6

1.4V to 3.7V

Up to 250mA

REG6

LDO

ACT8798

PMU

Active

Innovative Products. Active Solutions.

- 1 -

www.active-semi.com

ActivePMU^TMis a trademark of Active-Semi.

I²C^TMis a trademark of Philips Electronics.

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