Product Brief, 03-Feb-08
ACT8712
PRODUCT OPTIONS
Block
CHGR
REG1
REG2
REG3
Function
Battery Charger
Step-Down DC/DC
Step-Down DC/DC
Step-up DC/DC
Output Voltage
4.20V (4.10V to 4.40V available)
Programmable 1.1V to 4.4V
Programmable up to 27.5V
Capability
Programmable up to 1A
550mA
750mA
Up to 7 WLEDs
: 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
VSYS
BODY AND
VSYS
CONTROL
ACT8712
BAT
Li+ Battery
+
CURRENT
SENSE
VOLTAGE
SENSE
PRE-
CONDITION
AC Adaptor
or USB
4.3V to 6V
VIN
VINUVLO
nSTAT
4.0V
CHARGE STATUS
VIN
CHGLEV
FLOAT
Charge
Control
2.9V
THERMAL
REGULATION
110°C
VP1
SCL
SDA
OUT2
nRSTO
Serial
Interface
REG1
To Battery
SW1
OUT1
OUT1
GP12
VP2
VSYS
nMSTR
PUSH
BUTTON
OUT2
nIRQ
System
Control
SW3
ON1
REG3
ON2
GA
OVP3
FB3
GP3
To Battery
OUT3
REG2
SW2
OUT2
OUT2
GP12
To Battery
Innovative Products.
Active Solutions.
-2-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
