AOZ1284PI Datasheet, PDF (1/14 Pages) Alpha & Omega Semiconductors – EZBuck™ 4A Simple Buck Regulator

AOZ1284
EZBuck™ 4A Simple Buck Regulator
General Description
The AOZ1284 is a high voltage, high efficiency,
simple to use, 4A buck regulator optimized for a
variety of applications. The AOZ1284 works from a
3.0V to 36V input voltage range, and provides up to
4A of continuous output current. The output voltage
is adjustable from 30V down to 0.8V.
The AOZ1284 integrates an N-channel high-side
power MOSFET. The switching frequency can set
from 200kHz to 2MHz with an external resistor. The
soft-start time can be set with an external capacitor.
Features
 3.0V to 36V operating input voltage range
 50mΩ internal NMOS
 Efficiency up to 95%
 Adjustable soft-start
 Output voltage adjustable from 0.8V to 30V
 4A continuous output current
 Adjustable switching frequency from 200kHz to
2MHz
 Cycle-by-cycle current limit
 Short-circuit protection
 Over-voltage protection
 Over-temperature protection
 EPAD SO-8 package
Applications
 Point of load DC/DC conversion
 Set top boxes and cable modems
 Automotive applications
 DVD drives and HDDs
 LCD Monitors & TVs
 Telecom/Networking/Datacom equipment
Typical Application
Rev. 0.5 March 2012
Figure 1. 36V/4A Buck Regulator
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