Product Brief, 09-Nov-07

ACT8704

- 2 -

www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

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

VP2

GP12

GP12

SW2

SW1

ON1

nRSTO

nMSTR

PUSH

BUTTON

nIRQ

ON2

VSYS

VIN

BAT

CHGLEV

2.9V

PRE-

CONDITION

CURRENT

SENSE

VOLTAGE

SENSE

OUT2

OUT1

110°C

THERMAL

REGULATION

OUT2

FLOAT

OUT2

OUT2

4.0V

VINUVLO

nSTAT

CHARGE STATUS

4.3V to 6V

OUT2

OUT1

VSYS

BODY AND

VSYS

CONTROL

System

Control

GP3

SW3

To Battery

OUT3

FB3

OVP3

ACT8704

AC Adaptor

or USB

To Battery

GA

+

Li+ Battery

To Battery

Block

Function

Output Voltage

Capability

CHGR

Battery Charger

4.20V (4.10V to 4.30V available)

100mA/500mA

REG1

Step-Down DC/DC

1.2V, 1.5V, 1.8V, 2.5V, 3.0V, or 3.3V

550mA

REG2

Step-Down DC/DC

750mA

REG3

Step-Up DC/DC

Up to 27.5V

Up to 7 WLEDs