ACTIVE-SEMI ACT8786

ACT8786
Product Brief, 03-Feb-08
Advanced Information―All Information Subject to Change
Six Channel Integrated Power Management IC
for Handheld Portable Equipment
FEATURES
GENERAL DESCRIPTION
• Multiple Patents Pending
• Six Integrated Regulators
The patent-pending ACT8786 is a complete, costeffective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of
portable handheld equipment. This device integrates 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.
− 750mA PWM Step-Down DC/DC
− 750mA PWM Step-Down DC/DC
− 550mA PWM Step-Down DC/DC
− 250mA Low Noise LDO
− 250mA Low Noise LDO
− 250mA Low Noise LDO
• I2CTM Compatible Serial Interface
The ACT8786 also integrates two enable pins: ON1
controls REG1, REG2 and REG3, ON4 controls
REG4, REG5 and REG6.
− Programmable Output Voltages
− Configurable Operating Modes
• Minimal External Components
REG1, REG2 and REG3 are fixed-frequency, current-mode PWM step-down DC/DC converters that
are optimized for high efficiency and are capable of
supplying up to 750mA, 750mA and 550mA, respectively. REG4, REG5 and REG6 are low noise,
high PSRR linear regulators that are capable of
supplying up to 250mA each.
• 4x4mm, Thin-QFN (TQFN44-24) Package
− Only 0.75mm Height
− RoHS Compliant
APPLICATIONS
• Portable Devices and PDAs
The ACT8786 is available in a tiny 4mm x 4mm
24-pin Thin-QFN package that is just 0.75mm thin.
• Wireless Handhelds
• DMB Enabled Devices
• GPS Receivers, etc.
SYSTEM BLOCK DIAGRAM
REG2
Battery
nMSTR
nIRQ
nRSTO
ON1
ON4
Step-Down
DC/DC
REG3
System
Control
Step-Down
DC/DC
SCL
SDA
OUT1
1.1V to 4.4V
Up to 750mA
REG4
LDO
REG1
REG5
Step-Down
DC/DC
LDO
REG6
ACT8786
ActivePMU
Innovative Products. Active Solutions.
LDO
TM
-1-
OUT2
1.1V to 4.4V
Up to 750mA
OUT3
1.1V to 4.4V
Up to 550mA
OUT4
1.4V to 3.7V
Up to 250mA
OUT5
1.4V to 3.7V
Up to 250mA
OUT6
1.4V to 3.7V
Up to 250mA
www.active-semi.com
TM
ActivePMU is a trademark of Active-Semi.
I2CTM is a trademark of Philips Electronics.
Copyright © 2008 Active-Semi, Inc.
ACT8786
Product Brief, 03-Feb-08
PRODUCT OPTIONS
Block
Function
Output Voltage
Capability
REG1
Step-Down DC/DC
REG2
Step-Down DC/DC
REG3
Step-Down DC/DC
550mA
REG4
LDO
250mA
REG5
LDO
REG6
LDO
750mA
1.1V to 4.4V
750mA
250mA
1.4V to 3.7V
250mA
: 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
VP1
To Battery
ACT8786
REG1
SCL
Serial
Interface
SDA
SW1
OUT1
OUT1
GP12
INL
VP2
To Battery
nMSTR
SW2
REG2
PUSH
BUTTON
OUT2
OUT2
OUT2
nIRQ
GP12
VP3
OUT2
To Battery
nRSTO
REG3
SW3
ON1
OUT3
System
Control
OUT3
GP3
ON4
INL
LDO
REG4
To Battery
OUT4
OUT4
REFBP
Reference
LDO
REG5
GA
LDO
REG6
Innovative Products. Active Solutions.
-2-
OUT5
OUT5
OUT6
OUT6
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.