AOZ1038 Datasheet, PDF (1/14 Pages) Alpha & Omega Semiconductors – EZBuck™ 6 A Synchronous Buck Regulator

AOZ1038
EZBuck™ 6 A Synchronous Buck Regulator
General Description
The AOZ1038 is a high efficiency, easy to use, 6 A
synchronous buck regulator. The AOZ1038 works from a
4.5 V to 18 V input voltage range and provides up to 6 A
of continuous output current with an output voltage
adjustable down to 0.8 V.
The AOZ1038 is available in a 5x6 DFN-8 package or an
exposed pad SO-8 package. Both are rated over a -40 °C
to +85 °C ambient temperature range.
Features
z 4.5 V to 18 V operating input voltage range
z Synchronous Buck: 55 mΩ internal high-side switch
and 12 mΩ Internal low-side switch
z High efficiency: up to 95 %
z Internal soft start
z Active high power good state
z Output voltage adjustable to 0.8 V
z 6 A continuous output current
z Fixed 450 kHz PWM operation
z Cycle-by-cycle current limit
z Pre-bias start-up
z Short-circuit protection
z Thermal shutdown
z Thermally enhanced 5x6 DFN-8 and exposed pad
SO-8 packages
Applications
z Point of load DC/DC converters
z LCD TV
z Set top boxes
z DVD / Blu-ray players/recorders
z Cable modems
z PCIe graphics cards
Typical Application
VIN
C1
22µF
Ceramic
R_C
C_C
VIN
EN _{AOZ1038 LX}
COMP
AGND
FB
PGND
L1
2.2µH
VOUT = 1.2V
R1
C2, C3, C4
22µF
Ceramic
R2
Rev. 1.2 February 2011
Figure 1. 3.3V 6 A Synchronous Buck Regulator
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