ACT8352 [ACTIVE-SEMI]
Four-Channel Integrated Power Management IC for Handheld Portable Equipment; 四通道集成电源管理IC，适用于手持便携式设备
| 型号： | ACT8352 |
| 厂家： | 
ACTIVE-SEMI, INC |
| 描述： | Four-Channel Integrated Power Management IC for Handheld Portable Equipment |
| 文件： | 总2页 (文件大小：163K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
GENERAL DESCRIPTION
The patent-pending ACT8352 is a complete, cost
effective, highly-efficient ActivePMUTM power
350mA PWM Step-Down DC/DC
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.
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
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.
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.
The ACT8352 is available in a tiny 3mm 3mm
16-pin Thin-QFN package that is just 0.75mm thin.
SYSTEM BLOCK DIAGRAM
REG1
OUT1
Step-Down
Battery
0.6V to 3.9V
DC/DC
Up to 350mA
nRSTO
nPBIN
REG2
LDO
OUT2
0.6V to 3.9V
Up to 80mA
nIRQ
System
Control
PWRHLD
SCL
REG3
LDO
OUT3
0.6V to 3.9V
Up to 150mA
SDA
ACT8352
PMU
Active
REG4
LDO
OUT4
0.9V to 3.9V
Up to 300mA
TM
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
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www.active-semi.com
Copyright © 2009 Active-Semi, Inc.
ACT8352
Product Brief, 05-May-09
PRODUCT OPTIONS
Block
REG1
REG2
REG3
REG4
Function
Step-Down DC/DC
LDO
Output Voltage
Capability
350mA
0.6V to 3.9V
80mA
LDO
0.6V to 3.9V
150mA
LDO
300mA
: 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
OUT1
VP
Active- Semi
To Battery
nRSTO
ACT8352
Reset Timer
SW
OUT1
OUT1
GP
EN1
EN2
EN34
INL
To Battery or OUT1
SCL
SDA
REG2
LDO
OUT2
System
Control
REFBP
REG3
LDO
OUT3
Reference
GA
REG4
LDO
OUT4
EP
Innovative PowerTM
- 2 -
www.active-semi.com
Copyright © 2009 Active-Semi, Inc.
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