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PDF ACT8352 Data sheet ( Hoja de datos )
| Número de pieza | ACT8352 | |
| Descripción | Four-Channel Integrated Power Management IC | |
| Fabricantes | Active-Semi | |
| Logotipo |  |
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ACT8352
Product Brief, 05-May-09
Advanced Information¯All Information Subject to Change
Four-Channel Integrated Power Management IC for
Handheld Portable Equipment
FEATURES
Four Integrated Regulators
350mA PWM Step-Down DC/DC
80mA Low Noise LDO
150mA Low Noise LDO
300mA Low Noise LDO
Independent Enable/Disable Control
I2CTM Compatible Serial Interface
Programmable Output Voltages
Configurable Operating Modes
Minimal External Components
33mm, Thin-QFN (TQFN33-16) Package
Only 0.75mm Height
RoHS Compliant
APPLICATIONS
Portable Devices and PDAs
MP3/MP4 Players
Wireless Handhelds
GPS Receivers, etc.
www.DataSheet4U.com
GENERAL DESCRIPTION
The patent-pending ACT8352 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.
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, and REG4 are low noise,
high PSRR linear regulators that are capable of
supplying up to 80mA, 150mA, and 300mA,
respectively. Finally, an I2C serial interface provides
programmability for the DC/DC converters and
LDOs.
The ACT8352 is available in a tiny 3mm 3mm
16-pin Thin-QFN package that is just 0.75mm thin.
SYSTEM BLOCK DIAGRAM
Battery
nRSTO
nPBIN
nIRQ
PWRHLD
SCL
SDA
System
Control
ACT8352
PMUActive
TM
REG1
Step-Down
DC/DC
REG2
LDO
REG3
LDO
REG4
LDO
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
-1-
OUT1
0.6V to 3.9V
Up to 350mA
OUT2
0.6V to 3.9V
Up to 80mA
OUT3
0.6V to 3.9V
Up to 150mA
OUT4
0.9V to 3.9V
Up to 300mA
www.active-semi.com
Copyright © 2009 Active-Semi, Inc.
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| PDF Descargar | [ Datasheet ACT8352.PDF ] | |
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