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PDF ACT8325 Data sheet ( Hoja de datos )
| Número de pieza | ACT8325 | |
| Descripción | Dual PWM Step-Down DC/DCs in TDFN33 | |
| Fabricantes | Active-Semi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ACT8325 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Active-Semi
ACT8325
Rev0, 13-May-08
Dual PWM Step-Down DC/DCs in TDFN33
FEATURES
• Multiple Patents Pending
• Two Integrated Step-Down DC/DC Converters
− REG1: 350mA
− REG2: 550mA
• 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
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
ActivePMUTM 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 350mA and 550mA, 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.
www.DaStaSYheSetT4UE.cMom BLOCK DIAGRAM
Battery
ON1
ON2
System
Control
ACT8325
PMUActive
TM
REG1
Step-Down
DC/DC
REG2
Step-Down
DC/DC
OUT1
Adjustable, or
1.2V to 3.3V
Up to 350mA
OUT2
Adjustable, or
1.2V to 3.3V
Up to 550mA
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
-1-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
1 page  
Active-Semi
ACT8325
Rev0, 13-May-08
ABSOLUTE MAXIMUM RATINGSc
PARAMETER
VP1, SW1, VP2, SW2 to GP12, FB1, FB2, ON1, ON2 to GA
SW1 to VP1, SW2 to VP2
GP12 to GA
Junction to Ambient Thermal Resistance (θJA)
Operating Temperature Range
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
VALUE
-0.3 to +6
-6 to +0.3
-0.3 to +0.3
33
-40 to 85
125
-55 to 150
300
UNIT
V
V
V
°C/W
°C
°C
°C
°C
c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may
affect device reliability.
www.DataSheet4U.com
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
-5-
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
5 Page 
Active-Semi
ACT8325
Rev0, 13-May-08
PACKAGE INFORMATION
PACKAGE OUTLINE
TDFN33-10 PACKAGE OUTLINE AND DIMENSIONS
SYMBOL
A
A1
A3
D
E
D2
E2
b
e
L
DIMENSION IN
MILLIMETERS
MIN
0.700
MAX
0.800
0.000
0.050
0.153
0.253
2.900
3.100
2.900
3.100
2.350
2.450
1.650
1.750
0.200
0.320
0.500 TYP
0.300
0.500
DIMENSION IN
INCHES
MIN
0.028
MAX
0.031
0.0000 0.002
0.006 0.010
0.114 0.122
0.114 0.122
0.093 0.096
0.065 0.069
0.008 0.012
0.020 TYP
0.012 0.020
www.DataSheet4U.com
Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each product to make
sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use as critical components in life-
support devices or systems. Active-Semi, Inc. does not assume any liability arising out of the use of any product or circuit described in
this datasheet, nor does it convey any patent license.
Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact sales@active-
semi.com or visit http://www.active-semi.com. For other inquiries, please send to:
1270 Oakmead Parkway, Suite 310, Sunnyvale, California 94085-4044, USA
Innovative PowerTM
ActivePMUTM is a trademark of Active-Semi.
- 11 -
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ACT8325.PDF ] | |
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