ACTIVE-SEMI ACT8342

ACT8342
Product Brief, 29-Feb-08
Advanced Information―All Information Subject to Change
Three-Channel Integrated Power Management IC for
Handheld Portable Equipment
FEATURES
GENERAL DESCRIPTION
• Multiple Patents Pending
• Three Integrated Regulators
The patent-pending ACT8342 is a complete, cost
effective, highly-efficient ActivePMUTM power management solution that is ideal for a wide range of
portable handheld equipment. This device integrates one PWM step-down DC/DC converter and
two low noise, low dropout linear regulators (LDOs)
in a single, thin, space-saving package. This device
is ideal for a wide range of portable handheld
equipment that can benefit from the advantages of
ActivePMU technology but does not require a high
level of integration.
− 350mA PWM Step-Down DC/DC
− 80mA Low Noise LDO
− 150mA Low Noise LDO
• Independent Enable/Disable Control
• Minimal External Components
• 3×3mm, Thin-QFN (TQFN33-16) Package
− Only 0.75mm Height
− RoHS Compliant
REG1 is a fixed-frequency, current-mode PWM
step-down DC/DC converter that is optimized for
high efficiency and is capable of supplying up to
350mA output current. REG1’s output is available in
a variety of factory-preset output voltage options,
and an adjustable output voltage mode is also available. REG2, REG3 are low noise, high PSRR linear
regulators that are capable of supplying up to
80mA, and 150mA, respectively.
APPLICATIONS
• Portable Devices and PDAs
• MP3/MP4 Players
• Wireless Handhelds
• GPS Receivers, etc.
The ACT8342 is available in a tiny 3mm × 3mm
16-pin Thin-QFN package that is just 0.75mm thin.
SYSTEM BLOCK DIAGRAM
REG1
Step-Down
DC/DC
Battery
nRSTO
OUT1
Adjustable, or
1.2V to 3.3V
Up to 350mA
nMSTR
nIRQ
ON1
REG2
System
Control
LDO
OUT2
1.4V to 3.7V
Up to 80mA
ON2
REG3
ON3
LDO
ACT8342
PMU
Active
Innovative PowerTM
ActivePMU
TM
is a trademark of Active-Semi.
OUT3
1.4V to 3.7V
Up to 150mA
TM
-1-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
ACT8342
Product Brief, 29-Feb-08
PRODUCT OPTIONS
Block
Function
Output Voltagec
Capabilityd
REG1
Step-Down DC/DC
Adjustable, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, or 3.3V
350mA
REG2
LDO
REG3
LDO
80mA
1.4V to 3.7V
150mA
c: 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.
d: Contact factory for additional available products or custom requirements.
FUNCTIONAL BLOCK DIAGRAM
OUT2
Active-Semi
nRSTO
ACT8342
VP1
To Battery
INL
PUSH
BUTTON
SW1
REG1
nMSTR
OUT1
FB1
OUT2
GP1
nIRQ
INL
To Battery or OUT1
ON1
ON2
System
Control
ON3
REG2
LDO
OUT2
REG3
LDO
OUT3
REFBP
Reference
GA
Innovative PowerTM
-2-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.