AOZ1037 Datasheet, PDF (1/14 Pages) Alpha & Omega Semiconductors – EZBuck™ 5A Synchronous Buck Regulator

AOZ1037
EZBuck™ 5A Synchronous Buck Regulator
General Description
The AOZ1037 is a high efficiency, simple to use, 5A
synchronous buck regulator. The AOZ1037 works from a
4.5V to 18V input voltage range, and provides up to 5A
of continuous output current with an output voltage
adjustable down to 0.8V.
The AOZ1037 comes in an exposed pad SO-8 packages
and is rated over a -40°C to +85°C ambient temperature
range.
Features
z 4.5 to 18V operating input voltage range
z Synchronous rectification: 55mΩ internal high-side
switch and 19mΩ 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 0.8V
z 5A 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 Exposed pad SO-8 package
Applications
z Point of load DC/DC conversion
z LCD TVs
z Set top boxes
z DVD / Blu-ray players/recorders
z Cable modems
z PCIe graphics cards
z Telecom/Networking/Datacom equipment
Typical Application
VIN
C1
22µF
R_C
C_C
5V
R3
VIN
PGOOD
EN
AOZ1037 ^LX
COMP
FB
AGND
PGND
L1 4.7µH
R1
R2
VOUT
C2, C3
22µF
Rev. 1.1 September 2010
Figure 1. 3.3V/5A Synchronous Buck Regulator
www.aosmd.com
Page 1 of 14