AOZ1034DI Datasheet, PDF (1/18 Pages) –

AOZ1034
EZBuck™ 4A Synchronous Buck Regulator
General Description
The AOZ1034 is a synchronous high efficiency, simple to
use, 4A buck regulator. The AOZ1034 works from a 4.5V
to 18V input voltage range, and provides up to 4A of
continuous output current with an output voltage
adjustable down to 0.8V.
The AOZ1034 comes in both a 5x4 DFN-8 and an
exposed pad SO-8 package and is rated over a
-40°C to +85°C ambient temperature range.
Features
z 4.5V to 18V operating input voltage range
z Synchronous rectification: 60mΩ internal high-side
switch and 20mΩ Internal low-side switch
z High efficiency: up to 95%
z Internal soft start
z Output voltage adjustable to 0.8V
z 4A continuous output current
z Fixed 500kHz PWM operation
z Cycle-by-cycle current limit
z Pre-bias start-up
z Short-circuit protection
z Thermal shutdown
z Thermally enhanced 5x4 DFN-8 and exposed pad
SO-8 packages
Applications
z Point of load DC/DC conversion
z PCIe graphics cards
z Set top boxes
z DVD drives and HDD
z LCD panels
z Cable modems
z Telecom/Networking/Datacom equipment
Typical Application
VIN
C1
22µF
Ceramic
R_C
C_C
VIN
EN _{AOZ1034 LX}
COMP
AGND
FB
PGND
L1
4.7µH
VOUT
R1
C2, C3
22µF
Ceramic
R2
Rev. 1.1 September 2010
Figure 1. 3.3V 4A Synchronous Buck Regulator
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