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Copyright © 2008 Active-Semi, Inc.

ACT8740

Product Brief, 03-Feb-08

PRODUCT OPTIONS

: Output voltage options detailed in this table represent standard voltage options, and are available for samples or production orders.

Contact Active-Semi for more information regarding semi-custom output voltage combinations.

: Contact factory for additional available products or custom requirements.

FUNCTIONAL BLOCK DIAGRAM

Charge

Control

VP1

SW1

ON1

nMSTR

PUSH

BUTTON

nIRQ

VSYS

VIN

BAT

CHGLEV

2.9V

PRE-

CONDITION

CURRENT

SENSE

VOLTAGE

SENSE

OUT1

110°C

THERMAL

REGULATION

OUT3

FLOAT

OUT3

VINUVLO

4.3V to 6V

OUT1

VSYS

BODY AND

VSYS

CONTROL

VINUVLO

GP1

LDO

REG3

LDO

REG4

LDO

REG5

OUT3

OUT4

OUT5

AC Adaptor

or USB

+

Li+ Battery

System

Control

ACT8740

GA

OUT3

OUT4

OUT5

To Battery

To Battery

4.0V

Reference

Serial

Interface

SCL

GP2

SW2

To Battery

OUT2

FB2

OVP2

SDA

INL

REFBP

Block

Function

Output Voltage

Capability

CHGR

Battery Charger

4.20V (4.10V to 4.40V available)

Programmable up to 1A

REG1

Step-Down DC/DC

1.1V to 4.4V

350mA

REG2

Step-Up DC/DC

Up to 27.5V

Up to 7 WLEDs

REG3

LDO

1.4V to 3.7V

350mA

REG4

LDO

250mA

REG5

LDO

250mA

Active-Semi