Innovative Power TM- 1 -
https://www.sodocs.net/doc/9311220968.html,
Copyright ? 2010 Active-Semi, Inc.
ActivePMU
TM
is trademark of Active-Semi.
I
2C
TM
is a trademark of NXP.
Product Brief, 29-Nov-10
ACT8890
Advanced PMU for Portable Handheld Equipment FEATURES
?
Three Step-Down DC/DC Converters
? Four Low-Dropout Linear Regulators
? I2C
TM Serial Interface
?
Advanced Enable/Disable Sequencing Controller
?
Minimal External Components
? Tiny 5×5mm TQFN55-32 Package
? 0.75mm Package Height
? Pb-Free and RoHS Compliant
APPLICATIONS
? Personal Navigation Devices
? Portable Media Players
? Tablet Devices
? Smart Phones
? MIDs
GENERAL DESCRIPTION
The ACT8890 is a complete, cost effective, highly-
efficient ActivePMU TM power management solution,
for portable handheld equipment such as
Smartphones, Mobile Internet Devices (MID),
eBooks and etc.
This device features three step-down DC/DC
converters and four low-noise, low-dropout linear
regulators.
The three DC/DC converters utilize a high-
efficiency, fixed-frequency (2MHz), current-mode
PWM control architecture that requires a minimum
number of external components. Two DC/DCs are
capable of supplying up to 1150mA of output
current, while the third supports up to 1300mA. All
four low-dropout linear regulators are high-
performance, low-noise, regulators that supply up to
320mA each.
The ACT8890 is available in a compact, Pb-Free
and RoHS-compliant TQFN55-32 package. TYPICAL APPLICATION DIAGRAM
?
ACT8890
Product Brief, 29-Nov-10
?
Innovative Power TM - 2 - https://www.sodocs.net/doc/9311220968.html,
Copyright ? 2010 Active-Semi, Inc.
OUT2
OUT1
REG4OUT3
PRODUCT OPTIONS
Block
Function
Output Voltage
Capability
REG1 Step-Down DC/DC Adjustable, or 0.6V to 3.9V
1150mA
REG2 Step-Down DC/DC 1150mA REG3 Step-Down DC/DC
1300mA REG4 LDO 0.6V to 3.9V
320mA REG5 LDO 320mA REG6 LDO 320mA REG7
LDO
320mA
FUNCTIONAL BLOCK DIAGRAM