Active-Semi
FEATURES
•
Multiple Patents Pending
•
Two Integrated Step-Down DC/DC Converters
−
ACT8325NDAAA
REG1: 350mA min
REG2: 550mA min
−
ACT8325NDEH
REG1: 550mA min
REG2: 800mA min
ACT8325
Rev 2, 25-May-11
Dual PWM Step-Down DC/DCs in TDFN33
GENERAL DESCRIPTION
The patent-pending ACT8325 integrates two step-
down DC/DCs into a single, thin, space-saving
package to provide a cost-effective, highly-efficient
ActivePMU
TM
power management solution. This
device is ideal for a wide range of portable hand-
held equipment that can benefit from the advan-
tages of
ActivePMU
technology but do not require a
high level of integration.
REG1 and REG2 are fixed-frequency, current-mode
PWM step-down DC/DC converters that are opti-
mized for high efficiency and are capable of supply-
ing up to 550mA and 800mA, respectively. Both
outputs are available in a wide range of factory-
preset output voltage options, and an adjustable
output voltage mode is also available.
The ACT8325 is available in a tiny 3mm x 3mm
10-pin Thin-DFN package that is just 0.75mm thin.
•
180° Out-of-Phase Operation
−
Reduces Input Capacitor Requirements
•
•
•
•
Fixed or Adjustable Output Voltage Options
Independent Enable/Disable Control
Minimal External Components
3x3mm, Thin-DFN (TDFN33-10) Package
−
Only 0.75mm Height
−
RoHS-Compliant
APPLICATIONS
•
Portable Devices and PDAs
•
MP3/MP4 Players
•
Wireless Handhelds
•
GPS Receivers
SYSTEM BLOCK DIAGRAM
Innovative Power
TM
ActivePMU
TM
-1-
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
is a trademark of Active-Semi.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
