Active-Semi
FEATURES
•
Multiple Patents Pending
•
Six Integrated Regulators
−
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
ACT8796
Six Channel Integrated Power Management IC
for Handheld Portable Equipment
GENERAL DESCRIPTION
Rev 2, 16-Nov-09
•
I
2
C
TM
Compatible Serial Interface
−
Programmable Output Voltages
−
Configurable Operating Modes
The patent-pending ACT8796 is a complete, cost-
effective, highly-efficient
ActivePMU
TM
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 I
2
C Serial
Interface provides programmability for the DC/DC
converters and LDOs.
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.
The ACT8796 is available in a tiny 4mm×4mm 24-
pin Thin-QFN package that is just 0.75mm thin.
•
Minimal External Components
•
4x4mm, Thin-QFN (TQFN44-24) Package
−
Only 0.75mm Height
−
RoHS Compliant
APPLICATIONS
•
Portable Devices and PDAs
•
Wireless Handhelds
•
DMB Enabled Devices
•
GPS Receivers, etc.
SYSTEM BLOCK DIAGRAM
REG2
Step-Down
DC/DC
OUT2
1.1V to 4.4V
Up to 750mA
OUT3
1.1V to 4.4V
Up to 550mA
OUT4
0.645V to 3.7V
Up to 250mA
OUT5
1.4V to 3.7V
Up to 250mA
OUT6
1.4V to 3.7V
Up to 250mA
Battery
nMSTR
nRSTO
PWRHLD
ON3
SCL
SDA
OUT1
1.1V to 4.4V
Up to 750mA
System
Control
REG3
Step-Down
DC/DC
REG4
LDO
Pb-free
REG1
Step-Down
DC/DC
REG5
LDO
ACT8796
Active
PMU
TM
REG6
LDO
Innovative Power
TM
ActivePMU
TM
is a trademark of Active-Semi.
I
2
C
TM
is a trademark of Philips Electronics.
-1-
www.active-semi.com
Copyright © 2009 Active-Semi, Inc.