AOZ1254 Datasheet, PDF (1/13 Pages) Alpha & Omega Semiconductors – 4A EZBuck™ Synchronous Buck Regulator

AOZ1254
4A EZBuck™ Synchronous
Buck Regulator
General Description
The AOZ1254 is a high efficiency, low quiescent
current and simple to use 4A synchronous buck
regulator. This device operates from 4.5V to 26V
input voltage range and provides up to 4A of
continuous output current with an adjustable output
voltage down to 0.6V.
The AOZ1254 is offered in the Exposed Pad SO-8
package which is rated over a -40°C to +85°C
ambient temperature range.
Typical Application
Features
 4.5V to 26V input voltage operation range
 High efficiency PFM mode light load
performance
 Synchronous rectification: 110mΩ integrated
high-side switch and 30mΩ internal low-side
switch
 Integrated bootstrap diode
 External soft start control
 Adjustable output voltage down to 0.6V
 4A continuous output current
 Fixed frequency of PWM 620kHz operation
 Tailored for small profile inductor and ceramic
capacitors
 Cycle-by-cycle current limit
 Short-circuit protection
 Thermal shutdown
 Standard exposed pad SO-8 package
 -40°C to 150°C operating junction temperature
range
Applications
 High performance point-of-load DC/DC
converters
 Notebook/ultra mobile PCs/servers
 PCIe graphics cards/set top boxes
 Set top boxes
 DVD drives and HDD
 LCD-TV/displays
Rev. 1.0 January 2012
www.aosmd.com
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